1 00:00:23,519 --> 00:00:36,640 Ask what Up? What Up? Everybody? Welcome to another episode Let's Ask 2 00:00:36,719 --> 00:00:41,840 Paul the podcast where you get to ask me Paul Abernathy anything you want about 3 00:00:41,880 --> 00:00:47,200 the National Electrical Code or anything electrically related. UM, welcome to the podcast. 4 00:00:47,320 --> 00:00:50,119 Of course, you know you should be able to listen to our podcasts 5 00:00:50,119 --> 00:00:55,600 on any platform that you choose, so to that we tell you we're available 6 00:00:55,679 --> 00:01:02,479 on Spotify, Sprink, Spreaker, Um, Deezer, iHeartRadio, Apple Podcasts, 7 00:01:02,520 --> 00:01:07,239 Google Podcast, Spotify even on their Electra device. If you ask for 8 00:01:07,400 --> 00:01:11,159 Master the NEC podcast, you can find us and listen. But you can 9 00:01:11,200 --> 00:01:15,319 also get our free mobile app. All you gotta do is go to www 10 00:01:15,480 --> 00:01:21,480 dot n eccchat dot com. Of course, you can go to our website 11 00:01:21,480 --> 00:01:26,359 Fasttracksystem dot com as well. You can even go to our corporate site electroccode 12 00:01:26,359 --> 00:01:30,439 Academy dot net. It's all there. Every site has the same app on 13 00:01:30,519 --> 00:01:34,760 it. Now we no longer use the Wix app, so if you've got 14 00:01:34,799 --> 00:01:38,120 that, come on over to the new app. You can download it onto 15 00:01:38,159 --> 00:01:41,239 your phone. It's a PWA means it's not going to take up any space. 16 00:01:41,239 --> 00:01:44,840 It's basically a basically just a link on your phone is all it is. 17 00:01:45,120 --> 00:01:48,599 We don't load anything onto your phone. It's just a link that gets 18 00:01:48,640 --> 00:01:51,920 put to your if you accept it, it gets poked to your homescreen, 19 00:01:52,159 --> 00:01:55,519 and all it is is just a link basically sending you to an address. 20 00:01:56,079 --> 00:02:00,359 We do everything on the cloud and it changes how it works on your phone, 21 00:02:00,359 --> 00:02:04,280 whether it's a tablet or whatever. But it allows us to work it 22 00:02:04,359 --> 00:02:07,680 like an app for you. So it is an app and it goes on 23 00:02:07,719 --> 00:02:12,280 your phone, but it doesn't go into your phone, right, doesn't get 24 00:02:12,319 --> 00:02:15,560 to any of your content or stored anywhere on your phone. It's basically just 25 00:02:15,599 --> 00:02:20,479 the link and it adapts. Okay, that's the neat thing about these new 26 00:02:20,560 --> 00:02:25,360 PWA progressive web apps, and that's what we use. That's all we use 27 00:02:25,479 --> 00:02:29,520 now. So check that out. There's a lot of resources on there, 28 00:02:29,560 --> 00:02:35,240 a lot of free, free calculators and all that kind of good stuff. 29 00:02:35,240 --> 00:02:38,280 Plus you get access to fast tracks Chat, which is a chat forums. 30 00:02:39,199 --> 00:02:44,439 Michael Schwartz is our moderator over there. He'll handle you very well. In 31 00:02:44,479 --> 00:02:47,400 fact, he answered a guy's code question today. That was cool. Appreciate 32 00:02:47,439 --> 00:02:53,479 that, Michael. And of course you got the fast Tracks tube as well, 33 00:02:53,759 --> 00:02:57,960 access which is our video platform and of course, as always the Sparky 34 00:02:58,039 --> 00:03:00,400 Hub, but there's other great stuff on there as well, so we encourage 35 00:03:00,400 --> 00:03:02,719 you to check it out. If you're a fast tacked student, you can 36 00:03:02,759 --> 00:03:07,680 even get access to your course through a link on our app as well. 37 00:03:07,840 --> 00:03:09,879 Kind of makes it real nifty if you're studying on the go, that type 38 00:03:09,879 --> 00:03:14,120 of thing. All right, So we've got a co question. It was 39 00:03:14,159 --> 00:03:15,439 submitted in today, and I'm going to tell you I get this one an 40 00:03:15,479 --> 00:03:21,039 awful lot from students, but in general, people ask this question. So 41 00:03:21,319 --> 00:03:23,159 I'm going to just read the question and then i'll just kind of elaborate on 42 00:03:23,199 --> 00:03:27,280 what the question is. Hey, Paul, love your podcast. I have 43 00:03:27,319 --> 00:03:31,560 a question. When can I use three ten, dot twelve when it comes 44 00:03:31,599 --> 00:03:38,599 to the reduced size of these service conductors or feeders using the eighty three percent 45 00:03:38,719 --> 00:03:42,599 rule. I've heard you talk about it, I'm still confused. Can you 46 00:03:42,599 --> 00:03:46,879 clear it up for me? Thanks in advance. PS, loved your podcast 47 00:03:46,000 --> 00:03:51,599 you recently did on the One Family Dwelling. All right, Yeah, you're 48 00:03:51,680 --> 00:03:53,719 very welcome, And I don't remember when that was, but I'm sure we 49 00:03:53,800 --> 00:03:59,280 did one a while back on One Family Dwelling. So hopefully you got something 50 00:03:59,319 --> 00:04:02,039 out of that. Get ready for a bunch of new ones because the twenty 51 00:04:02,080 --> 00:04:08,479 twenty three all new code references, everything's moved around a little bit. So 52 00:04:08,639 --> 00:04:11,080 again we're going to be doing those, and they're coming out and then and 53 00:04:11,240 --> 00:04:14,400 probably the next three weeks, So look for those as we launch the twenty 54 00:04:14,400 --> 00:04:18,879 twenty three edition of the fast Tracks programs. Okay, so the question was 55 00:04:18,920 --> 00:04:25,000 about three ten dot twelve. Now, this is for single phase dwelling services 56 00:04:25,040 --> 00:04:29,560 and feeders. So this is the old eighty three percent we like to say 57 00:04:29,600 --> 00:04:32,560 the eighty three percent rules. So this is a reduced conductor size, whether 58 00:04:32,600 --> 00:04:36,120 it's for service conductors or it's for feeders, as long as you can meet 59 00:04:36,199 --> 00:04:40,720 all of the rules that are listed in three ten dot twelve. There's a 60 00:04:40,759 --> 00:04:45,360 three ten dot twelve A, B, C and D. Okay, A 61 00:04:45,560 --> 00:04:48,519 being for services, B being for feeders. And when we're talking about feeders, 62 00:04:48,519 --> 00:04:53,199 we're saying from a service, let's say up to an individual dwelling unit 63 00:04:53,199 --> 00:04:57,079 in a multi family building, Okay, that would be a feeder. Okay, 64 00:04:57,399 --> 00:05:00,720 so it would be very applicable here. But we're gonna re and then 65 00:05:00,720 --> 00:05:01,920 I'll try to break it all down for you, but for those in the 66 00:05:02,000 --> 00:05:05,600 exams that are preparing for an electrical exam, and then make it really simple 67 00:05:05,639 --> 00:05:10,399 for you. You are always going to want to use three ten dot twelve. 68 00:05:10,439 --> 00:05:14,160 This is not an exception. This is a rule. Now, if 69 00:05:14,160 --> 00:05:17,040 you want to size everything based on three ten dot sixteen ampacities, then go 70 00:05:17,160 --> 00:05:23,959 for it. But you are this is a rule right here that again you 71 00:05:24,000 --> 00:05:30,160 can use and you are permitted to use this eighty three percent if all of 72 00:05:30,160 --> 00:05:34,439 the conditions apply, and the conductors will still be considered protected if you follow 73 00:05:34,519 --> 00:05:39,800 everything that's here in these rules. Now, this is based on diversity. 74 00:05:39,879 --> 00:05:44,399 It's been done for many years. It used to be the table now is 75 00:05:44,439 --> 00:05:46,879 in the twenty twenty three. It's now in the twenty twenty. Prior to 76 00:05:46,959 --> 00:05:53,240 that it was an informed of annex D seven, and then before that it 77 00:05:53,399 --> 00:05:57,079 was in the codes. It kind of gotten put to the back end annexes, 78 00:05:57,199 --> 00:06:00,079 and then it made it back up. Now. The good thing about 79 00:06:00,079 --> 00:06:03,560 that table is it's quick and easy. The bad thing about that table is 80 00:06:03,680 --> 00:06:09,120 you can only use it if you have no adjustments or corrections that take place. 81 00:06:09,600 --> 00:06:13,920 So if you have no ambient temperature other than thirty degree celsius, which 82 00:06:13,920 --> 00:06:18,079 good luck with that. Or you don't have more than four current carent conductors, 83 00:06:18,399 --> 00:06:23,759 okay, or four or more current Carrent conductors. Then you know, 84 00:06:24,480 --> 00:06:27,319 then that's a situation where you're like, okay, well, if I don't 85 00:06:27,360 --> 00:06:30,959 have those conditions, then I can use three ten dot twelve. Okay. 86 00:06:31,439 --> 00:06:34,319 So let's kind of dig into this. So hopefully you got your code book. 87 00:06:34,319 --> 00:06:36,079 I'm gonna start at three ten dot twelve. I'll read it to you, 88 00:06:36,120 --> 00:06:40,120 and then we'll explain a little bit and I might give you some examples, 89 00:06:40,920 --> 00:06:43,480 all right, So let me go on and read it here, three 90 00:06:43,519 --> 00:06:46,120 ten dot twelve. Oh and by the way, if you're having to listen 91 00:06:46,240 --> 00:06:49,160 and you're in the twenty seventeen edition, is three ten fifteen B seven. 92 00:06:49,199 --> 00:06:53,319 By the way, in case you're kind of one of those code stragglers where 93 00:06:53,360 --> 00:06:57,040 your state is still back there lagging on the twenty seventeen and they just won't 94 00:06:57,120 --> 00:07:00,199 get with the program, all right. That's just for all you out there, 95 00:07:00,240 --> 00:07:04,480 all right. So three ten dot twelve Single phase dwelling services and Feeders. 96 00:07:04,480 --> 00:07:12,240 It says for one family dwellings and the individual dwelling units of two family 97 00:07:12,439 --> 00:07:18,480 or multi family dwellings. Services and feeder conductors supplied by a single phase one 98 00:07:18,560 --> 00:07:25,680 twenty two forty volts system shall be permitted to be sized in accordance with three 99 00:07:25,720 --> 00:07:30,399 ten dot twelve A through D. Okay. So again we're talking about the 100 00:07:30,439 --> 00:07:35,639 service and feeder conductors supplied by a single phase one twenty two forty volts system 101 00:07:35,759 --> 00:07:41,959 are permitted to use the allowances in three ten dot twelve A through D Okay. 102 00:07:42,439 --> 00:07:46,199 So it doesn't just it applies to the services to a one family dwelling. 103 00:07:46,959 --> 00:07:51,160 It would apply to the feeders. That may be the services outside and 104 00:07:51,199 --> 00:07:55,560 the panels further in the building, so that would be a feeder, So 105 00:07:55,600 --> 00:07:58,959 it could apply to that. We'll see what the conditions are later, but 106 00:07:59,160 --> 00:08:03,199 could apply to that. Obviously, it would apply if you had a service 107 00:08:03,319 --> 00:08:07,120 at a multi family building, but then you have individual feeders that are going 108 00:08:07,240 --> 00:08:13,439 all the way up to individual units, Okay, then obviously you're gonna want 109 00:08:13,439 --> 00:08:16,160 to look at three ten dot twelve. So all those conditions are in play, 110 00:08:16,279 --> 00:08:22,040 okay, but most certainly individual dwelling units or a one family dwelling. 111 00:08:22,120 --> 00:08:26,199 So a house definitely always want to consider whether or not three ten dot twelve 112 00:08:26,319 --> 00:08:28,720 is in play, and if it isn't play, then you want to use 113 00:08:28,759 --> 00:08:31,720 it all right. It also goes on to say, again, this is 114 00:08:31,759 --> 00:08:37,120 where we're going to get into a different voltage class system. Here it says 115 00:08:37,159 --> 00:08:43,200 for one family dwellings and individual dwelling units of a two family and multifamily dwellings, 116 00:08:43,639 --> 00:08:48,399 single phase feeder conductors. Okay, So this is for the feeders feeder 117 00:08:48,440 --> 00:08:54,200 conductors consisting of two ungrounded conductors and a neutral conductor from a two to eighty 118 00:08:54,360 --> 00:08:58,200 one twenty volt system, okay, shall be permitted to be sized in accordance 119 00:08:58,480 --> 00:09:03,080 with three ten dot twelve A through C. So you don't get to use 120 00:09:03,279 --> 00:09:07,159 D, right, you just get to use eighth th C. Now, 121 00:09:07,679 --> 00:09:09,679 D is a grounded conductor, and we all know that in a system like 122 00:09:09,759 --> 00:09:16,159 that that's basically taking a three phase system and deriving from it two ungrounded conductors 123 00:09:16,200 --> 00:09:20,480 and a neutral conductor. Well, we know that that can play havoc on 124 00:09:20,519 --> 00:09:24,759 a neutral depending on the situation. So you're going to see that D deals 125 00:09:24,759 --> 00:09:31,039 with the grounded conductor. So if you're dealing with a single phase feeder that 126 00:09:31,200 --> 00:09:35,519 is derived and it has two ungrounded and one grounded or neutral in this case 127 00:09:35,639 --> 00:09:41,519 neutral conductor from a toy eighty one twenty, then you're just not going to 128 00:09:41,600 --> 00:09:46,120 be able to use D. So you're gonna have to size that grounded conductor 129 00:09:46,200 --> 00:09:52,200 based on the maximum imbalanced load. And so again you're not going to be 130 00:09:52,200 --> 00:09:56,519 able to use three ten dot twelve D for this, and it could mean 131 00:09:56,559 --> 00:10:01,600 that your neutral is either full sized to even larger depending on the condition you're 132 00:10:01,600 --> 00:10:03,720 dealing with. Okay, so I just want to throw that out front when 133 00:10:03,720 --> 00:10:07,639 you're using three ten dot twelve. So let's look at services real quick. 134 00:10:07,919 --> 00:10:11,600 A it says for a service rated one hundred ampiers through four underd ampiers, 135 00:10:11,600 --> 00:10:16,679 So there's your first caveat. So it's got to be rated one hundred through 136 00:10:16,679 --> 00:10:22,039 four hundreds. So this assumes you've done a load calculation you know that you're 137 00:10:22,080 --> 00:10:26,600 between one hundred and four hundred amps. Okay, if that's you did that, 138 00:10:26,759 --> 00:10:30,879 and you've done a standards or an optional because this works for both standard 139 00:10:30,960 --> 00:10:33,720 or optional. If you've done that and you know that your service falls within 140 00:10:33,799 --> 00:10:39,559 this window, then you get to keep going. It says the service conductors 141 00:10:39,600 --> 00:10:45,879 supplying the entire load associated with the one family dwelling or the service conductor supplying 142 00:10:46,080 --> 00:10:52,200 the entire load associated with an individual dwelling unit in a two family or multi 143 00:10:52,200 --> 00:10:58,039 family dwelling shall be permitted to have an ampacity not less than eighty three percent 144 00:10:58,679 --> 00:11:05,279 of the service rating. If no adjustment or correction factors are required. Table 145 00:11:05,360 --> 00:11:09,759 three ten twelve eight shall be permitted to be applied. So in the twenty 146 00:11:09,759 --> 00:11:11,879 twenty three edition of the National Eletical Code, and I don't have the twenty 147 00:11:11,919 --> 00:11:16,679 twenty geared up right here for this moment, but that was the intent. 148 00:11:16,879 --> 00:11:20,440 So what are we saying here? Okay, what does it mean when we 149 00:11:20,519 --> 00:11:26,759 say when it says that it supplied the entire load associated with the one family 150 00:11:26,840 --> 00:11:30,360 dwelling. What does it mean? So let's just think of a dwelling, 151 00:11:30,519 --> 00:11:33,879 a house, the house you live in. If you have a service going 152 00:11:33,919 --> 00:11:37,120 to it and it hits a meter, right, and in the old days, 153 00:11:37,159 --> 00:11:39,840 you know, it go from a meter and then it would go straight 154 00:11:39,960 --> 00:11:43,480 most of the time out of the back of that into a panel with a 155 00:11:43,559 --> 00:11:46,759 main breaker. Right most of the time, That's what it be. Well, 156 00:11:46,360 --> 00:11:50,679 not the case with the twenty twenty edition of the National Electrical Code. 157 00:11:50,679 --> 00:11:54,559 Now you have to have an emergency disconnect outside, and then it may or 158 00:11:54,639 --> 00:12:00,559 may not be a service disconnect. You have multiple options in two thirty eighty 159 00:12:00,600 --> 00:12:03,960 five, So go look at that. We'll probably cover that on some of 160 00:12:03,960 --> 00:12:07,879 the new stuff for the twenty twenty three because even though that's not new for 161 00:12:07,960 --> 00:12:11,200 twenty twenty three, the way they structured it and broke it out makes it 162 00:12:11,320 --> 00:12:16,759 so much easier to understand, and it just makes it we definitely have to 163 00:12:16,799 --> 00:12:18,000 cover that, So that'll be one of the videos that we're going to have 164 00:12:18,039 --> 00:12:22,080 in the new collection, is really breaking that down making it easy to understand. 165 00:12:22,600 --> 00:12:26,759 But anyway, so let me kind of paint you this mental picture here. 166 00:12:26,600 --> 00:12:30,679 So if I were to come down the weather head, so we had 167 00:12:30,759 --> 00:12:37,440 service entrance conductors coming down from the mast down into the meter enclosure, and 168 00:12:37,480 --> 00:12:41,159 then it comes out of the meter enclosure and goes into the let's say an 169 00:12:41,200 --> 00:12:48,759 exterior NEMA three R panel forty circuit panel. Okay, as a main breaker. 170 00:12:48,840 --> 00:12:50,639 There you go. So there's our emergency disconnect, but in this case 171 00:12:50,639 --> 00:12:54,919 it's also our service disconnecting means okay, everything is right there, it's outside, 172 00:12:54,960 --> 00:12:58,799 it's in ANEMA three R, We're good. And then all the circuits 173 00:13:00,000 --> 00:13:03,399 of the dwelling, the brand circuits and all this stuff come into the back 174 00:13:03,399 --> 00:13:05,879 of that panel. Easier said than done. Hopefully you don't bring it through 175 00:13:05,879 --> 00:13:09,159 one big knockout because that would be a no no. But anyway, get 176 00:13:09,200 --> 00:13:16,080 into the panel. Okay. Now, if that was the case, then 177 00:13:16,279 --> 00:13:22,360 all of the brand circuits are in that panel. So those service conductors that 178 00:13:22,440 --> 00:13:26,200 are coming from the weatherhead all the way down through the meter to the supply 179 00:13:26,279 --> 00:13:33,799 side of that service decinec are basically carrying the entire load associated with that one 180 00:13:33,840 --> 00:13:37,679 family dwelling. And there's diversity that's associated with that. Some things will beyond 181 00:13:37,799 --> 00:13:41,240 some things won't. When we do a low calculation. Again, we're already 182 00:13:41,240 --> 00:13:45,720 getting a really big break with the optional method anyway, but you still have 183 00:13:45,759 --> 00:13:50,279 a great level of diversity. So it's based on historical data. This has 184 00:13:50,320 --> 00:13:52,639 not been a problem. That's why it's in the code. This is a 185 00:13:52,720 --> 00:13:54,759 minimum safety document. Some people hate to hear me say that, but it 186 00:13:54,919 --> 00:13:58,879 is what it is. If you go to court, trust me, as 187 00:13:58,879 --> 00:14:01,399 long as you do it the minimum standard here, you're gonna be okay. 188 00:14:01,440 --> 00:14:03,080 I'll get you out of the trouble. Okay. It's when you fall below 189 00:14:03,080 --> 00:14:07,679 it that you're going to have a problem. Okay, So and in this 190 00:14:07,720 --> 00:14:11,120 scenario here, because that panel handles one hundred percent of the load, then 191 00:14:11,240 --> 00:14:16,399 I can apply that eighty three percent to those service conductors. Now, how 192 00:14:16,440 --> 00:14:18,440 do you get that a three Well, let's just say it was a two 193 00:14:18,519 --> 00:14:22,679 hundred amp service. If it's a two hundred amp service, then you take 194 00:14:22,720 --> 00:14:24,360 the rating of the service, which is going to be based on the overcurrent 195 00:14:24,399 --> 00:14:31,399 protected device two hundred amps times eighty three percent, right, and that makes 196 00:14:31,399 --> 00:14:35,480 it one hundred and sixty six amps. Right now, if you didn't have 197 00:14:35,519 --> 00:14:41,000 any situation with four or more current carrying conductors, if you didn't have any 198 00:14:41,000 --> 00:14:45,519 situation where you're amburrant, was thirty degree celsius or other than thirty degree cealsius 199 00:14:45,639 --> 00:14:48,879 or eighty six three fahrenheit means it's warmer. If it's warmer than that, 200 00:14:48,000 --> 00:14:52,120 then you're going to have to take that into consideration. But let's say you 201 00:14:52,200 --> 00:14:56,799 have none of that. In most inspectors are not going to call out ambient 202 00:14:56,840 --> 00:15:00,440 at services. They just don't understand it anyway, So they don't, and 203 00:15:00,519 --> 00:15:03,120 you're not going to have more You're not going to have four more current carent 204 00:15:03,159 --> 00:15:07,039 conductors, so you're not going to need to use three ten dot fifteen C 205 00:15:07,320 --> 00:15:11,960 one, and you're not going to need to use the ambient rules and three 206 00:15:11,039 --> 00:15:16,840 ten fifteen B one. Okay, you're not going to need them unless an 207 00:15:16,840 --> 00:15:22,919 inspector invokes it because of the temperature anyway, So all that aside. Typically 208 00:15:22,919 --> 00:15:28,120 at that point you would go to you could go to three ten sixteen the 209 00:15:28,200 --> 00:15:33,120 ampacity table, okay, and find a conductor under the seventy five degree column, 210 00:15:33,559 --> 00:15:37,440 right, because we're over one hundred amps. And again assuming we know 211 00:15:37,519 --> 00:15:39,720 the rating of the breakers and everything, and we're going to assume that everything's 212 00:15:39,799 --> 00:15:43,559 rated seventy five degree C or higher. So then you would go to the 213 00:15:43,600 --> 00:15:48,679 seventy five degree column and you pick a conductor, okay, and that conductor 214 00:15:48,679 --> 00:15:54,399 would be a two odd copper right for that application for this sixty sent because 215 00:15:54,480 --> 00:16:00,720 you already did the eighty three percent. Now you can save yourself if there 216 00:16:00,840 --> 00:16:04,240 is no adjustment or corrections involved, then you can save yourself a lot of 217 00:16:04,240 --> 00:16:07,720 work by just looking at the table. And the table it says, and 218 00:16:07,720 --> 00:16:11,080 we're looking at table three ten dot twelve eight, it says, if you're 219 00:16:11,120 --> 00:16:17,320 looking at two hundred amps. Then it says for the service rating two hundred 220 00:16:17,360 --> 00:16:22,120 amps, and it says for copper it's two hot copper and aluminum it's four 221 00:16:22,120 --> 00:16:26,320 ought aluminum. And I can tell you an awful lot of four at aluminum 222 00:16:27,000 --> 00:16:33,399 se cable gets used for this application. Okay, very common to be utilized 223 00:16:33,480 --> 00:16:40,039 that way. Now, that's pretty straightforward. But I will tell you if 224 00:16:40,080 --> 00:16:45,679 you have an adjustment or correction, then it can change how that works. 225 00:16:45,720 --> 00:16:49,440 Now you don't need to pan it. Right. We have a new drating 226 00:16:49,480 --> 00:16:53,679 demystified coming out three point zero. It's going to really get deep into the 227 00:16:53,679 --> 00:16:59,159 weeds and expand it even more because they're again changes have taken place. But 228 00:16:59,159 --> 00:17:02,679 I'm gonna make it real simple, Okay, real simple for you. You 229 00:17:02,840 --> 00:17:06,680 do this no differently than you would do other conductors. When you're sizing, 230 00:17:07,160 --> 00:17:11,279 you still have to be at least eighty three percent, so we can be 231 00:17:11,359 --> 00:17:15,759 less than one sixty six. Right, But if the ambient temperature, let's 232 00:17:15,759 --> 00:17:18,839 just throw something out there. Let's just let's just say the inspector came and 233 00:17:18,839 --> 00:17:22,640 said, all right, well, I'm gonna throw an ambient temperature out at 234 00:17:22,640 --> 00:17:27,039 you, and my experience in this area because I grew up here. You 235 00:17:27,079 --> 00:17:32,759 know, whatever they may or may not say. Again, not being derogatory. 236 00:17:32,839 --> 00:17:36,680 I'm just just saying whatever they may or may not say. Let's say, 237 00:17:36,720 --> 00:17:40,920 okay, well, in this area, we we'll see as high as 238 00:17:41,680 --> 00:17:45,519 one hundred and two degrees fahrenheit. Okay, fair enough, you might see 239 00:17:45,559 --> 00:17:49,720 one hundred and two degrees fahrenheit. So that means right off the bat if 240 00:17:49,720 --> 00:17:53,240 it's because you're not going to have four or more current current conductors in this 241 00:17:53,279 --> 00:17:56,599 scenario. Okay, this is again, this is for a single family. 242 00:17:56,839 --> 00:18:00,160 This is for single dwellings, right, this is not for commercial. Okay, 243 00:18:00,200 --> 00:18:04,319 So one hundred two degrees frenheit, mister inspector. So let's assume the 244 00:18:04,359 --> 00:18:10,960 conductors are thhhn thhw n dash two. All those typically what you will get 245 00:18:11,000 --> 00:18:17,559 today on a quality service entrance cable. Then you're gonna go to three ten 246 00:18:17,680 --> 00:18:22,240 fifteen B one one, and that's new for the twenty twenty three. The 247 00:18:22,319 --> 00:18:26,640 B one one in the twenty twenty's is three ten fifteen B one. Anyway, 248 00:18:26,039 --> 00:18:30,319 you go to three ten fifteen B one one. That's the nifty table, 249 00:18:30,000 --> 00:18:33,680 and you'll notice that it says correction factors based on thirty degree C. 250 00:18:33,920 --> 00:18:37,640 You notice there's two tables here, folks. Don't use the other one, 251 00:18:37,799 --> 00:18:44,359 okay, don't use the one below it, the three ten fifteen B one 252 00:18:44,400 --> 00:18:49,160 two. That's only free use in applications where the conductors are being selected from 253 00:18:49,160 --> 00:18:56,119 the tables three ten dot eighteen nineteen twenty things like that. Okay, those 254 00:18:56,400 --> 00:19:00,279 reference forty degree C. And that's why you would use that table. The 255 00:19:00,319 --> 00:19:03,920 normal stuff that you do day in and day out, where you use dampascit 256 00:19:03,000 --> 00:19:07,519 tables in three ten sixteen and maybe occasionally three ten seventeen, you're gonna be 257 00:19:07,680 --> 00:19:11,680 using three ten fifteen B one one. Okay, the thirty degree table. 258 00:19:11,960 --> 00:19:14,799 Okay. I just wanted to throw that out because I do get that question 259 00:19:14,839 --> 00:19:17,680 a lot by folks. Which table do I use? Which table do I 260 00:19:17,799 --> 00:19:19,960 use? You use the first one, all right? So one hundred and 261 00:19:21,039 --> 00:19:23,319 two degrees fahrenheit. We go to the table and they'll notice at the top 262 00:19:23,759 --> 00:19:29,480 it says temperature rating of conductor. So this is where you're going to use 263 00:19:29,519 --> 00:19:33,319 the rating of the insulation. So we say it was THHHN thwn desk to 264 00:19:33,359 --> 00:19:36,480 you both the rated ninety degrees weet or drive at that point, because they 265 00:19:36,480 --> 00:19:40,559 had that dual rating, and so we're gonna go to the ninety degree because 266 00:19:40,599 --> 00:19:44,279 the code allows me to adjust from the highest rating. All right, so 267 00:19:44,319 --> 00:19:48,519 I'm gonna go to the ninety I'm gonna go down to Since we're talking fahrenheit, 268 00:19:48,960 --> 00:19:52,279 we'll go He said it was one hundred two degrees faheits so that would 269 00:19:52,279 --> 00:19:56,759 be the ninety six through one zero four. So the right side of this 270 00:19:56,839 --> 00:20:00,799 table is fahrenheit. That's what our question. That's what the inspector said, 271 00:20:00,839 --> 00:20:06,000 one hundred two degrees fare nine. Okay, I'll trust you. So ninety 272 00:20:06,000 --> 00:20:08,680 six two one zero four under the ninety degrees C column, it looks like 273 00:20:08,720 --> 00:20:15,400 our modifier it's going to be point nine one, all right, And basically 274 00:20:15,400 --> 00:20:18,279 that's the same as a ninety one percent, but that's point nine one. 275 00:20:18,400 --> 00:20:22,960 That's our multiplier. Okay, all right, So we come back and we 276 00:20:23,000 --> 00:20:26,960 don't need to be at this table anymore. We're pretty much done for that. 277 00:20:26,319 --> 00:20:29,839 So we come back now and we say, okay, how do we 278 00:20:29,960 --> 00:20:33,359 do this now that we can't use the table in three ten twelve A okay, 279 00:20:33,359 --> 00:20:36,279 we take that one sixty six, remember that was the eighty three percent, 280 00:20:37,039 --> 00:20:41,759 and you divide that by point ninety one, right, and that takes 281 00:20:41,839 --> 00:20:45,240 us to one eighty two point four one. So we use division to go 282 00:20:45,400 --> 00:20:51,480 up, we use multiplication to go down. All right. So now once 283 00:20:51,519 --> 00:20:53,680 we do that, we have to abandon table three ten twelve. A. 284 00:20:53,960 --> 00:20:57,839 Okay, we're still going to have a conductors at least eighty three percent, 285 00:20:59,200 --> 00:21:00,960 but we abandon it now. And now we got to go to three ten 286 00:21:02,119 --> 00:21:04,000 sixteen. All right, So if you've got your code books I do, 287 00:21:04,079 --> 00:21:08,720 I will scroll down and get us to three ten sixteen, and in three 288 00:21:08,839 --> 00:21:11,759 ten sixteen we'll look at the ambascity. We're still going to be Now. 289 00:21:11,920 --> 00:21:15,200 Now in this case, we're going to be doing the ninety degree column. 290 00:21:15,240 --> 00:21:21,599 Why because we're adjusting. Okay, we're we're able to we're doing something because 291 00:21:22,160 --> 00:21:26,279 of actually we're not adjusting, we're correcting. There you go see think of 292 00:21:26,359 --> 00:21:30,079 C for Celsius. We're correct adjustment will be where you had four more current 293 00:21:30,079 --> 00:21:33,279 current conductors. So we're correcting. That's the better term to use. Because 294 00:21:33,279 --> 00:21:37,720 we got our term police out there. We got to make sure we keep 295 00:21:37,759 --> 00:21:41,799 the term police happy. So under the ninety you go down here and you're 296 00:21:41,839 --> 00:21:44,720 looking for a conductor under the ninety degree. That's good for one hundred and 297 00:21:44,720 --> 00:21:48,680 eighty two point four one amps, So it looks like I'm gonna be down 298 00:21:48,759 --> 00:21:53,279 to it looks like a two odds. Still, that's at one ninety five. 299 00:21:53,400 --> 00:21:56,720 That's easily covers the one eighty two, right, all right, So 300 00:21:57,000 --> 00:22:02,200 now that we know what we're gonna use the one ninety five, how can 301 00:22:02,240 --> 00:22:06,480 we check our work to make sure now that we're at least eighty three percent? 302 00:22:06,559 --> 00:22:08,119 How do we do that? Well, we take that one ninety five 303 00:22:08,359 --> 00:22:12,240 and now we use multiplication. That's when you're working down from a value. 304 00:22:12,440 --> 00:22:17,839 So I take that one ninety five and multiply that, okay, by point 305 00:22:17,920 --> 00:22:22,279 nine one because that was the modifier that we got earlier from three ten fifteen 306 00:22:22,359 --> 00:22:30,920 B one one, and that's is one seventy seven point four five, all 307 00:22:30,000 --> 00:22:34,119 right, So one seventy seven point four to five is greater than the need 308 00:22:34,319 --> 00:22:37,880 for one sixty six, which was the eighty three percent. So we're definitely 309 00:22:40,160 --> 00:22:44,240 at least eighty three percent, and that's what we go over soul in our 310 00:22:44,319 --> 00:22:49,559 case here, we're most we're still going to be okay with using what We're 311 00:22:49,599 --> 00:22:56,359 still gonna be okay with using that two odd Okay, makes sense, all 312 00:22:56,400 --> 00:23:00,680 right, And I will remind you that under the seventy five degree c column, 313 00:23:02,160 --> 00:23:04,880 the two odd is still good at seventy five at one hundred and seventy 314 00:23:04,880 --> 00:23:11,039 five, right, so we're not exceeding it with the one sixty six. 315 00:23:11,039 --> 00:23:15,039 That was what the eighty three percent was. All we did was an adjustment 316 00:23:15,720 --> 00:23:21,079 to excuse me, a correction to see whether or not we had a conductor 317 00:23:21,119 --> 00:23:25,480 that still was going to be at least eighty three percent after we did this 318 00:23:25,599 --> 00:23:29,839 correction, and we do. We have a conductor that's good for one hundred 319 00:23:29,880 --> 00:23:33,359 and seventy seven point four five. But we're really only worried about the fact 320 00:23:33,400 --> 00:23:37,240 that it's what that it is at least eighty three percent. But that's a 321 00:23:37,319 --> 00:23:44,640 whole purpose of using that eighty three percent allowance, okay, all right, 322 00:23:45,079 --> 00:23:48,160 So in this case, if we go back to the table that we had 323 00:23:48,359 --> 00:23:52,000 just to kind of show you something. If we go back to the table 324 00:23:53,680 --> 00:23:57,759 and look at it, you'll see that the two hundred was two ot copper. 325 00:23:59,079 --> 00:24:03,440 So there wasn't an enough temperature change that caused us any problem with that, 326 00:24:03,839 --> 00:24:08,559 Okay, So table would have still worked. But you need to do 327 00:24:08,599 --> 00:24:11,920 it to see Otherwise, if the temperature had been a lot greater than it 328 00:24:12,000 --> 00:24:15,640 might have pushed it out of a two hot and it might be jumping up 329 00:24:15,680 --> 00:24:18,920 to a three hut that type of thing. Okay, but you most certainly 330 00:24:19,079 --> 00:24:26,640 still are using the eighty three percent. Okay, then remember people get confused 331 00:24:26,680 --> 00:24:32,200 with this. If you're looking at three ten twelve A, it's clearly states 332 00:24:32,240 --> 00:24:36,279 it shall be permitted to have an ampacity not less than eighty three percent of 333 00:24:36,319 --> 00:24:40,799 the service rating. Then it says, oh, but if no adjustment to 334 00:24:40,839 --> 00:24:45,720 corrections are factors are required, table three ten twelve A shall be permitted to 335 00:24:45,720 --> 00:24:49,920 be applied. Well, we're not using the table, right, We're still 336 00:24:51,000 --> 00:24:55,160 using the eighty three percent, And that's where people tend to get lost with 337 00:24:55,240 --> 00:24:56,480 that. If I'm not using the table, then you're treat it like a 338 00:24:56,559 --> 00:25:00,920 normal calculation. Should Remember the conductors can't be smaller than eighty They have to 339 00:25:00,920 --> 00:25:03,559 be not less than eighty three of the service rating. That's what three ten 340 00:25:03,799 --> 00:25:07,480 twelve is all about, and it's it's all about diversity. But the panel 341 00:25:07,559 --> 00:25:12,079 has to handle one hundred percent of the load. Okay, Now, where 342 00:25:12,119 --> 00:25:17,119 could this go? Wonky? Folks, let me give you that same example. 343 00:25:17,799 --> 00:25:21,960 Let's say I had the services coming down a weather head an se cable 344 00:25:22,000 --> 00:25:26,160 on the side, and it's going to a meter, and it's still coming 345 00:25:26,160 --> 00:25:30,920 to a meter, and then it's hitting a four circuit panel. He's saying, 346 00:25:30,960 --> 00:25:33,000 well, why is it hitting a four circuit panel? Well, they're 347 00:25:33,000 --> 00:25:37,039 putting the main breaker out there. Maybe it's it's a feed through. The 348 00:25:37,079 --> 00:25:40,799 main breaker is gonna be two hundred amps and they're gonna be feeding through and 349 00:25:40,920 --> 00:25:45,680 they're going to have a feeder that's inside the dwelling, further in the dwelling, 350 00:25:45,119 --> 00:25:48,720 so not all the circuits are going to be in that exterior panel. 351 00:25:48,839 --> 00:25:53,839 Now, if no breakers were put in there, no loads came out of 352 00:25:53,880 --> 00:26:02,799 that exterior panel and basically just passed through that outside two hundred rated disconnect or 353 00:26:02,839 --> 00:26:07,240 whatever or panelboard with the main breaker in there, and it passed through that 354 00:26:07,400 --> 00:26:10,720 and hit the panel inside, and then all of the loads and that dwelling 355 00:26:10,759 --> 00:26:15,920 went to that panel inside. Then I would still be able to size those 356 00:26:15,960 --> 00:26:21,440 feeders and that service using three ten dot twelve, and that feeder never has 357 00:26:21,440 --> 00:26:25,359 to be larger than the service. Okay, And it states that down in 358 00:26:26,279 --> 00:26:30,200 down an item number C in three ten dot twelve. But we'll look at 359 00:26:30,240 --> 00:26:33,359 that in a second. All right, So why can't we do this, 360 00:26:33,880 --> 00:26:38,960 Well, it's because that feeder from that exterior service disconnect, which maybe has 361 00:26:40,000 --> 00:26:41,799 a couple of breakers, it has a couple of slots in it, but 362 00:26:41,839 --> 00:26:47,720 they're not being used right now. That break that panel inside is still seeing 363 00:26:48,519 --> 00:26:53,079 the loads so far. Right, here's where it goes astray. Say there 364 00:26:53,160 --> 00:26:59,440 was a panel outside and it had four spaces in it, and since the 365 00:26:59,480 --> 00:27:03,480 outside air conditioning unit was right next to it, the electricians like, well, 366 00:27:03,559 --> 00:27:07,279 it's right there, that's right beside the panel. I'd be dumb if 367 00:27:07,359 --> 00:27:11,000 I didn't just put two pole breakers in there and going and feed these air 368 00:27:11,039 --> 00:27:14,720 conditioning units. It's in with insight, it's right there beside it, you 369 00:27:14,799 --> 00:27:18,599 know, kind of knock it out. Well, here's the funny thing when 370 00:27:18,599 --> 00:27:22,519 it comes to using three ten dot twelve. If you put those breakers in 371 00:27:22,559 --> 00:27:27,119 that exterior panel, now you can't use three ten dot twelve for that feeder 372 00:27:27,319 --> 00:27:33,359 that's running into that interior panel because it's not seeing one hundred percent of the 373 00:27:33,400 --> 00:27:40,599 load. Right. It's important now from the service mast down to the supply 374 00:27:40,720 --> 00:27:45,839 side of the disconnect service disconnect. Yeah, that is seeing everything. Okay, 375 00:27:45,960 --> 00:27:51,240 so three ten dot twelve A is applicable there. But when it came 376 00:27:51,279 --> 00:27:56,440 to the portion from that exterior panel feeding the remote distribution panel inside, if 377 00:27:56,559 --> 00:28:02,599 that panel inside isn't that feeder is not of the loads for that dwelling on 378 00:28:02,680 --> 00:28:07,519 it, then it cannot use three ten twelve makes sense, yeah, because 379 00:28:07,519 --> 00:28:11,640 it's not seeing the entire load, and that's what it says. This has 380 00:28:11,680 --> 00:28:15,759 to supply the entire load. Now you're probably saying at that point you're going, 381 00:28:15,799 --> 00:28:21,240 what, Paul, wait a minute, isn't that's a feeder, right? 382 00:28:21,519 --> 00:28:26,240 And you're in a talking about services. Absolutely, you're very astute listener. 383 00:28:26,680 --> 00:28:30,160 So now let's jumped down to B, which is going to address that 384 00:28:30,319 --> 00:28:34,160 very question of what I just explained to you. Now, B is for 385 00:28:34,319 --> 00:28:40,559 feeders. It says for feeders rated one hundred amp years through four hundred amp 386 00:28:40,640 --> 00:28:45,559 years, the feeder conductors supplying the entire load you hear me, the tire 387 00:28:45,640 --> 00:28:52,000 load associated with the one family dwelling or the feeder conductors supplying the entire load 388 00:28:52,039 --> 00:28:56,079 associated with an individual dwelling unit in a two family or a multi family dwelling 389 00:28:56,519 --> 00:29:03,440 should be permitted to have the ampascy not less of the feeders rating. Okay. 390 00:29:03,160 --> 00:29:11,200 So in this case, if outside was the disconnect okay for the service, 391 00:29:12,119 --> 00:29:17,640 and it's also coming out let's say feed through at the bottom, then 392 00:29:17,799 --> 00:29:22,400 it's basically the bus is protected by the main breaker, but those conductors on 393 00:29:22,440 --> 00:29:26,440 the load side is coming out. Those are feeders, right, and they're 394 00:29:26,519 --> 00:29:29,960 not seeing one hundred percent of the load. If you're putting breakers in that 395 00:29:30,000 --> 00:29:33,400 exterior panel. Hear me. Now, if you just come from the weather 396 00:29:33,440 --> 00:29:37,160 head down to the meter and you hit an outside service disconnect and that's all 397 00:29:37,160 --> 00:29:41,119 it is. It's just a two hundred app disconnect, and then the load 398 00:29:41,160 --> 00:29:44,039 side of that is the feeder going to a panel inside, then you're good 399 00:29:44,039 --> 00:29:48,039 as gold. Okay, you can definitely use three ten to twelve because that 400 00:29:48,119 --> 00:29:52,920 panel inside is seeing one of the load, right, makes sense. So 401 00:29:52,960 --> 00:29:57,400 it's all about load diversity. And again, if you branch off and put 402 00:29:57,400 --> 00:30:00,839 a panel outside and you're feeding through or something like that, or you do 403 00:30:00,880 --> 00:30:04,400 one of those feed through panels and you put some breakers outside, don't plan 404 00:30:04,519 --> 00:30:07,440 on using three ten dot twelve, and it's not going to be the way 405 00:30:07,480 --> 00:30:11,480 to go. Okay, all right, So the same thing with the feeder. 406 00:30:11,559 --> 00:30:18,440 If you can use that table, you know, the three ten twelve 407 00:30:18,480 --> 00:30:22,480 A table as long as no adjustment of corrections are to take place. If 408 00:30:22,519 --> 00:30:26,359 they are, then you're not permitted to use a table, and you got 409 00:30:26,359 --> 00:30:27,759 to do just like we did before. You're gonna have to do the same 410 00:30:27,799 --> 00:30:32,640 type of calculation you would do anywhere when you had adjustment of corrections to be 411 00:30:32,680 --> 00:30:36,960 applied. Okay. The only difference is you've got that minimum threshold of eighty 412 00:30:36,960 --> 00:30:40,000 three percent that you have to keep an eye on. Okay when you're sizing. 413 00:30:41,000 --> 00:30:45,799 All right. Next is CE feeder ampacities. Okay, check us out. 414 00:30:45,880 --> 00:30:52,079 It says, in no case shall a feeder for an individual dwelling unit 415 00:30:52,720 --> 00:30:59,119 be required to have an ampacity greater than that specified in three ten dot twelve 416 00:30:59,240 --> 00:31:04,079 A or Okay, So if you've sized everything for three ten dot twelve A 417 00:31:04,200 --> 00:31:10,240 and B, and now you're taking a feeder, and that feeder, depending 418 00:31:10,359 --> 00:31:15,559 on what the load may be on that feeder, it is to an individual 419 00:31:15,680 --> 00:31:19,759 dwelling unit, and it isn't required to have an ampacity that is actually greater 420 00:31:21,519 --> 00:31:25,400 than what you would calculate out in three ten dot twelve A or B. 421 00:31:26,440 --> 00:31:32,799 Right. So again it's basically reiterating the feeder portion does not have to be 422 00:31:32,920 --> 00:31:37,599 larger than what it would be if you calculated it per three ten dot twelve 423 00:31:37,640 --> 00:31:41,000 A or B right now. The only reason we say that is because there 424 00:31:41,000 --> 00:31:44,640 will be some applications where the feeder may appear to be required to be larger. 425 00:31:45,480 --> 00:31:48,240 But in this case, if you follow the rules for feeders and three 426 00:31:48,319 --> 00:31:52,279 ten dot twelve B and it's kept it to the minimum of eighty three percent, 427 00:31:52,920 --> 00:31:59,759 then it would never need to be larger than what you calculated, okay. 428 00:32:00,440 --> 00:32:04,920 And then, of course the last one is grounded conductor. Now the 429 00:32:04,960 --> 00:32:07,559 grounded conductor. Now I'm telling you, when you're buy an sc cable, 430 00:32:07,279 --> 00:32:15,039 it's this is typically already figured out for you. And again, neutrals are 431 00:32:15,079 --> 00:32:21,920 basically carrying the maximum imbalanced loads between any phase to the neutral. And but 432 00:32:22,079 --> 00:32:25,640 let me tell you what one of the things to remember is D cannot be 433 00:32:25,920 --> 00:32:32,839 used when you're dealing with the application for two O eighty one twenty where you 434 00:32:32,880 --> 00:32:38,519 have two un grounded conductors and a neutral conductor derived from single phase feeder derived 435 00:32:38,599 --> 00:32:43,480 from a three phase system. Then it automatically. You remember at the very 436 00:32:43,519 --> 00:32:46,559 beginning of three ten dot twelve, Remember it says that you can't use D. 437 00:32:47,119 --> 00:32:51,079 It basically permits you use A through C, but it's not going to 438 00:32:51,200 --> 00:32:55,160 let you use D. Why because you could have a situation where the neutral 439 00:32:57,000 --> 00:33:01,119 neutral loads might be higher based on the type system, so you don't get 440 00:33:01,160 --> 00:33:07,240 that break. But let's say it is a one twenty two forty fold system 441 00:33:07,359 --> 00:33:09,640 and you get a break here grounded conductors, here's what it says. It 442 00:33:09,720 --> 00:33:15,759 says the grounded conductors should be permitted to be size smaller than the un grounded 443 00:33:15,839 --> 00:33:22,240 conductors if the requirements of two twenty dot sixty one and two thirty dot forty 444 00:33:22,359 --> 00:33:27,599 for services or the requirements of two fifteen dot two and two twenty dot sixty 445 00:33:27,640 --> 00:33:31,359 one for feeders are met. Now, remember that is the application where you're 446 00:33:31,400 --> 00:33:36,480 dealing with two thirty dot forty two or two fifteen dot two. That's dealing 447 00:33:36,519 --> 00:33:40,039 with one hundred percent for the non continuous load and one hundred twenty five percent 448 00:33:40,079 --> 00:33:45,799 for continuous loads, and making sure you meet all of those calculations for the 449 00:33:45,839 --> 00:33:50,839 loads, that you understand what your actual loads are for your neutral and then 450 00:33:50,880 --> 00:33:54,119 of course two twenty dot sixty one is where you go, and you understand 451 00:33:54,160 --> 00:34:00,240 that you get to take some reductions seventy percent reduction if it's over to hud 452 00:34:00,279 --> 00:34:04,640 amps to two hundred amps. Anything over that is seventy percent of that the 453 00:34:04,680 --> 00:34:08,360 first two hundred percent, but then you also get other allowances in there. 454 00:34:08,960 --> 00:34:13,519 Basically, you have to make sure if you want to keep it simple, 455 00:34:13,559 --> 00:34:17,719 folks, make sure that your neutral is sized to at least handle the maximum 456 00:34:17,840 --> 00:34:22,280 imbalanced load, and it can't be on a feeder like this. It can't 457 00:34:22,280 --> 00:34:27,960 be smaller than the equipment ground and conductor, and it also can't be smaller 458 00:34:27,960 --> 00:34:31,679 than the requirements in two one zero two c one. Okay, so that'd 459 00:34:31,679 --> 00:34:37,400 be minimum requirements, but the ground a conductor may be larger based on an 460 00:34:37,400 --> 00:34:43,679 actual low calculation where you actually calculate what the neutral load is and you size 461 00:34:43,719 --> 00:34:46,079 accordingly. Okay, so you have to take the larger the load comes up 462 00:34:46,159 --> 00:34:50,039 larger, you gotta have it larger, but it can't be less than that 463 00:34:50,519 --> 00:34:53,159 in two fifty one zero two c one. That's for sure, right. 464 00:34:54,599 --> 00:34:59,800 So it kind of gives you that that little guidance there when it comes to 465 00:34:59,800 --> 00:35:01,519 the around a conductor. It also goes on it says, where connections or 466 00:35:01,559 --> 00:35:07,159 adjustment factors are required by three ten fifteen B or C, they shall be 467 00:35:07,360 --> 00:35:14,519 permitted to be applied to the ampacity associated with the temperature rating of the conductor. 468 00:35:14,800 --> 00:35:19,280 Okay, So again this goes to tell you that if you have to 469 00:35:19,400 --> 00:35:24,679 use the adjustment and corrections, you're able to use the temperature value of the 470 00:35:24,760 --> 00:35:31,159 installation of the conductor with its ninety degree c thhn for example TNTWN. That 471 00:35:31,320 --> 00:35:37,360 dash two is important because if it was just THHWN, it would only be 472 00:35:37,400 --> 00:35:42,039 seventy five degrees in a wet but that dash two makes it ninety degrees wet 473 00:35:42,119 --> 00:35:46,400 or dry. So critical, especially when you're doing a correction and then you 474 00:35:46,480 --> 00:35:52,480 actually have to go to three ten fifteen B one one. That's huge because 475 00:35:52,559 --> 00:35:54,119 I want to be able to go to the ninety degree column. Okay, 476 00:35:54,679 --> 00:36:00,800 so so important to realize all that. Also, mind you that informative NXD 477 00:36:01,039 --> 00:36:05,719 example D seven has an illustration. I'm going to tell you that I believe 478 00:36:05,800 --> 00:36:07,639 the illustration is wrong when it comes to the sizing. When it does the 479 00:36:07,639 --> 00:36:12,360 adjustment of correction and the code panel doesn't want to seem to listen to me. 480 00:36:12,679 --> 00:36:15,159 But we just did that example right now, and I can tell you 481 00:36:16,880 --> 00:36:21,360 it's wrong in the codebook, but hey, nobody listens to me anyway. 482 00:36:21,719 --> 00:36:25,880 All right, So there you go, folks. That is three ten dot 483 00:36:25,920 --> 00:36:30,119 twelve the best I can do in a podcast to hope you were able to 484 00:36:30,159 --> 00:36:31,360 follow along with me. If not, you know what you can do, 485 00:36:31,440 --> 00:36:37,119 folks. You can go to Paul Abernathy dot com and you can submit your 486 00:36:37,159 --> 00:36:42,320 own question. Just let me know what episode this is and what the topic 487 00:36:42,519 --> 00:36:45,920 was and what your question is, and I will try to follow up. 488 00:36:45,000 --> 00:36:49,320 No, don't give me very brief information because I don't go back and listen 489 00:36:49,360 --> 00:36:52,159 to my podcast. You're gonna have to be very descriptive on what you're asking 490 00:36:52,480 --> 00:36:57,239 and I'll do my best to follow up, folks. All right, okay, 491 00:36:57,360 --> 00:37:00,159 Well tell next time folks. Glad we could get another one knocked out 492 00:37:00,159 --> 00:37:27,119 for you. Until next time, Stay safe, God bless, Ask Ask Ask