I took this guys full prep class a few years ago. Passed my masters exam on the first try thanks to it! great teacher
@TheMadhatter0710
10 ай бұрын
Information is thrown out very thoroughly. Thumbs up!
@wadetaney8642
9 ай бұрын
Well put!! Great teacher.
@soundman2604
Жыл бұрын
Very well laid ou,t with Code articles as references. Nice job!
@electrical1019
Жыл бұрын
Thank you!
@jeremyjpegan
Жыл бұрын
agreed! Thank you for the schooling. Do you do anything on motor controls?
@electrical1019
Жыл бұрын
Thank you, it's what our goal is! We're hoping to have some material on controls as well as basic branch wiring up once the fall semester of school is out!
@controlsgirl
Жыл бұрын
Great example!! Way to walk through it!
@electrical1019
Жыл бұрын
Thank you!
@CallmeDr773
2 ай бұрын
Super helpful! Thank you
@Luminous116
15 күн бұрын
I've noticed you use 75° column for the branch ckt conductor size. However I was told to use 60°C column for circuits rated 100 amperes or less (per NEC 110.14-C) regardless of conductor insulation rating. Was there an exception that I missed?
@JesusCruz-wt2zp
Жыл бұрын
Your videos are great. Please do more ..
@electrical1019
Жыл бұрын
Thank you! We are always looking to upload new content!
@narendergodara1992
Жыл бұрын
EXCELLENT VEDIO👌👌🙏🙏
@kythuatcongnghiep8559
11 ай бұрын
thank you, very helpfully for me
@user-en6nk7rz7m
Жыл бұрын
wouldn't the feeder size in step 5 be calculated as THWN-2 like the motor wires? And thus be a number 6 wire rated for 75 AMPS? Great video though, thanks
@user-fn9cs4dv8r
10 ай бұрын
i have same question as others on using 75C when ampacity column. 75C can be used only when terminations are also 75C. why is 75C used here?
@stevenwarren206
Жыл бұрын
The overloads are calculated at nameplate FLA, right? Everything else is calculated from the FLC from from 430 tables , am I right about this?
@electrical1019
Жыл бұрын
For field calculations that is correct. These lectures are intended for students taking a licensing exam in Kentucky, in which on the exam typically the FLC is used to calculate overload protection.
@santiagocid5908
Жыл бұрын
You are right 👍
@reynaldomartinez4918
23 күн бұрын
I find that pretty odd since the motor nameplate FLA is tipically different than the FLC. If the FLC is much higher than the FLA by many amps, then the overload will be set much higher than the FLA.. interesting
@pingpongpaddlehead
3 ай бұрын
fascinating
@cevtongooden1836
Жыл бұрын
Thanks so much send more
@mr.write1433
8 ай бұрын
what nec edition is this ?
@kylecropanese8744
4 ай бұрын
Thank you so much about to go for my exam shitting bricks this helps so much
@marmars1081
3 ай бұрын
Did you pass?
@MensLifestyle1985
5 ай бұрын
For Step #6, why wouldn't you add 150A to 20A for the remaining motor? Why did you only add the FLC and not the Branch Circuit protection from step #4 like you did for the larger motor?
@oscar27ization
Жыл бұрын
I think you made a small mistake by multiplying your overload protection device with your FULL LOAD CURRENT instead of your FULL LOAD AMP??
@sekwanmerritt6235
7 ай бұрын
Yes for step 3 Sizing the Branch Circuit conductor he multiplied a %125 by the value of Overload Protection instead of the instead of the Full Load Current.
@daltondelaney9534
11 ай бұрын
Why do you always use 75C degrees column for motor feeder wire size? (8:30 in video)
@JV503
3 ай бұрын
110.14 NEC
@mcarroll598
Жыл бұрын
When you size breakers for motors, wouldn’t you round down to the next standard circuit breaker size?
@electrical1019
Жыл бұрын
430.52 exception number 1 allows us to go up to the next standard size for overprotective devices serving branch circuits for motors; 430.62 does not have this exception, so we have to go down to the next standard size for overcurrent devices serving feeder circuits for motors.
@mcarroll598
Жыл бұрын
@@electrical1019 thank you so much
@purpleraptor1183
Жыл бұрын
I am doing 50 HP [FLC= 65A, 65A*125% = 81.25A got Conductor size AWG 4] and 250 HP [FLC= 302A, 302A*125% = 377.5A got Conductor size AWG 500MCM table 310.16(75 ,Copper)]. For 50 HP - I am doing 65 A * 250% = 162.5 Amp breaker. But from ugly book, for 50 HP size breaker-150A. Same for 250 HP - 302 * 250% = 755 A. Should I not go up and standard size of breaker?
@johnnyroloff8118
4 ай бұрын
I think it is because the 250% from Table 430.52(C)(1) is a maximum rating, so the ugly book selects the closest standard size under 250% of the FLC.
@thanmaysudev
Ай бұрын
Could you please tell me why the 40hp motor doesn't have any starter
@kentbinaoro9164
8 ай бұрын
I am now very confused, but anyways I only know things for residential wiring only, I thought 14awg must use 15a breaker to protect the wire
@Mike-ec4zp
Жыл бұрын
Where does table 430.22(E) fall in these steps? If asked for any of these rating percentages? Answer be helpful
@electrical1019
Жыл бұрын
You would only use table 430.22(E) if you are sizing conductors for a motor that is not continuous duty (step 4). The NEC tells us that anytime we use a motor we have to consider it to be for continuous duty unless we meet certain conditions, so we generally speaking don't bring this table up. If you are using this information for real work application, and you consistently work with intermittent use motors like on an elevator, it is very good to know though!
@Tito-nw6te
7 ай бұрын
How can i get these work sheets ??
@aaronwidder9624
Жыл бұрын
I thought if you rated your ocp at 250% it would be the next "lowest" size breaker or if it's sized at 125% it would be the next "highest" size breaker? Great Info sir! 👍
@aaronwidder9624
Жыл бұрын
@@mitcheljames7053 ooo ok, I read over that and understand now. Thanks for the clarification sir! 🫡
@theonetrueanthonylong1843
Жыл бұрын
@@mitcheljames7053 Yes, thank you!
@electrical1019
Жыл бұрын
It looks like we got beat to the explanation, but yes, Mitchel provided a perfect breakdown of why we are able to go up to the next size breaker!
@danielgriffin2674
11 ай бұрын
Some guys are just cut out to be teachers, nice job.
@mcarroll598
Жыл бұрын
Wouldn’t you size your OVERLOADS to your FLA on the motor? Not your FLC from the code book?
@electrical1019
Жыл бұрын
In the field/"real-world", yes, you would. This video assumes you do not have that information, and is more for those taking a licensing exam rather than practical application.
@mcarroll598
Жыл бұрын
@@electrical1019 thanks. One other question. I understand how to size for fuses and breakers but what’s confusing is when you round up or round down. Any explanation would be great. Thank you.
@electrical1019
Жыл бұрын
@@mcarroll598 I believe we just responded to that in another comment you left!
@mcarroll598
Жыл бұрын
@@electrical1019 thank you
@Kowloonhongkong
5 ай бұрын
why dont protect the wire?
@Primez8902
Жыл бұрын
You dont need the FLA to do these calculations?
@Primez8902
Жыл бұрын
Im using the 2014 code book
@electrical1019
Жыл бұрын
Actually, FLA comes from the motor nameplate. FLC comes from tables 430.248 and 430.250. 430.6(A)(1) requires us to use the FLC from the tables for all calculation other than overload protection rather than the FLA (in this videos we assume that the FLA is not provided and just use the FLC for over overload protection). Hope that helps!
@natename797
Жыл бұрын
Why is the first wire size not # 18?
@TheMoody2006
8 ай бұрын
I'm looking for the same answer. I THINK he made a mistake with the chart (read the AMPS as the wire size) but was technically correct because 14 AWG is the smallest size permissible for a branch circuit.
@alexramos9459
5 ай бұрын
So I just did this by calculator and field knowledge on wires and experience wiring things actual amperage it’s 7.7 not 6 learning ohms law helps a lot and makes easy to calculate by using the calculator
@stuffthings9618
11 ай бұрын
Arent you supposed to calculate the Overload from nameplate amps????
@Resistculturaldecline
10 ай бұрын
If the nameplate info is provided, you are to use nameplate for separate overload devices. If nameplate is not given, you're to use table FLC. At least, that how I think I understand it.
@jass1989
6 ай бұрын
Last i checked. 1.4 was less than 1.5
@jacobhess3n327
2 күн бұрын
Yeah I’m confused too. There are inaccuracies throughout the entire video
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