Excellent !!!!!! SO HELPFULL

So lets say for example that in the exam they trow you a question on motor load calculation and one of the answers they're asking for is the size of an over load protection device OCPD. In this case you always, always have to chose a step down form your numbers? Also I would like to ask you one more question. What is the minimin cover requirements for a swimming pool underground service conductors? Thank a bunch and God bless.

@ElectricalCodeCoach

4 жыл бұрын

When sizing your standard OLP overload protect device you must use the next size down from the standard ratings listed in 240.6A. and if I'm understanding your second question correctly you are going to use table 300.5 depending on your scenario for underground conduit/conductor runs. Hope this helps!

Good day Coach on box fill the grounding conductors have changed a little bit it says to add 1/4 for every additional conductor above four grounding conductor‘s in a box based on the largest conductor. 2020 code book

@ElectricalCodeCoach

3 жыл бұрын

You are spot on! ill make us a video breaking it down!

Thanks a lot for your answers. I just got confused because a previous instructor told us students to go one size up for motor over load protection selection. This was his question: What size overload would you select for the following motor? 10 HP 240Volts 3ph wound-rotor After multiplying 28amps x 150%=42 we ended up selecting the 45 amps from table 240.6 (A) but after watching your video I guess we should have chosen a 40amp one right?

@ElectricalCodeCoach

4 жыл бұрын

Yes, to me the code book is very tricky about this. The reason you do the next size down is because it does not say that you can choose the next standard size. It does not specifically say to choose the next size down just the absence of the verbiage saying that you can choose the next size. It would be nice if they would clarify it by saying that you cannot choose the next size up.

@ramirorosiles7448

4 жыл бұрын

Thank you for such information. I just joined and started watching your videos and all I can say is that by far they are the best videos I've found on the web. Can't thank you enough for posting them for us people willing to learn the trade.

@ElectricalCodeCoach

4 жыл бұрын

I'm really glad is it helping! Are there any specific videos i could make that would help you in any way?

where does the codebook tell us to always size normal overload protection from the Name plate current?

@ElectricalCodeCoach

3 жыл бұрын

Great question!! 430.(a)(2)

@lifeschool4916

3 жыл бұрын

@@ElectricalCodeCoach thank you!

Hey thank u so much for these videos man!! Quick question I’m testing tomorrow btw😅 in one of ur videos u said if wire temperature is not listed , use 75C but 110.14 c1b says use 60 under 100A. Other than bcd motors. How do i go about this?

@ElectricalCodeCoach

Жыл бұрын

Great question! if the terminal's are listed is supersedes that code

Do we just assume a motor is continuous duty if the question doesn’t specify? Since 430.32 says continuous duty motors

@ElectricalCodeCoach

3 жыл бұрын

Yes!

Where in the codebook does it tell us to select the next size down?

@ElectricalCodeCoach

3 жыл бұрын

This one is tougher! How it works is in 430.31 it does not specifically allow you to use the next size up so you must use the next size down.

@lifeschool4916

3 жыл бұрын

@@ElectricalCodeCoach thank you!