Hi Bluegrass College. I'm getting my electrical license, and is an excellent demonstration and explanation of definitions, thanks you very much. It's very useful.
Thanks for posting this lesson. I have a newbie question. Are microwaves and toasters, and other small kitchen appliances typically covered under the "small appliance" circuits? All the examples I looked at have only the two 1500VA circuits. For a large house, there could be more than one kitchen. Not saying this is the norm, but given more than two small appliances are expected, should we be increasing the circuits beyond the two? Also, is there a distinction made between fixed in place microwaves and countertop microwaves? Thanks!
The code provides a very loose definition for fixed in place appliances. Article 550 provides a definition for the term, but it leaves much to interpretation. Generally speaking, I provide guidelines that any appliance that requires a tool to remove will usually be considered a fixed in place one. By this definition, you could reasonably make the argument that fixed in place microwave such as an over-range one could be considered for the calculation, while a countertop one would not.
Hi, Awesome video and clear steps but I have a questions that's eating away at me. In step#6 the last part reads neutral demand 70% per article 220.61(B). Ok, The reason I am able to do this is because after using table 220.55 and applying the demand factors I have now determined my maximum unbalanced load and now the 70% applies or is it something else?
Hi Christopher, I'm not really sure if I understand what it is you're asking. In step 6 basically we are using table 220.55 to determine the load requirements for the range/cooking unit. This amount would apply to our non-grounded circuit conductors of the service. 220.61(B) then allows us to reduce that amount to 70% of its total when calculating the ungrounded circuit conductors.
One more question Step 8. The article you referenced 430.24 Several motors. Ok is is assumed that since motors are included in the small appliance branch circuit that, since its load is on the small appliance branch it will have other loads? If not I don't see how this article would apply the part that gets me is 'motors and other loads'
Hi again, Christopher. We do not ever assume a motor will be covered by the small appliance branch circuits. Any fixed in place motor loads must have their loads included independently.
@@electrical1019 I guess I'm asking because Article 210.23(A) allows for a branch circuit to supply lighting units and or other utilization equipment or a combination of both, and shall comply with 210(A)(1) and (A)(2). With out this article we wouldn't be able to have the Bathroom fan motor and fan light on the same circuit also doesn't Article 210.(C)(3) Exception allow for the small appliance branch circuit in a bathroom to supply outlets for other equipment within the same bathroom, so in this case the bathroom fan motor and light are already taken into account as part of the Bathroom Branch Circuit at 1500VA? I'm confused as I have never seen a ceiling fan on a load calculation or bathroom exhaust fans even though the ceiling fan is about 75watts and 35 watts for a exhaust fan.
Hi Christopher, I believe I understand your question better now. Yes, you are correct in your reference to 210.32(A) and 210.11(C)(3), however, even though the examples you list would likely be covered by a small appliance branch circuit or by the general lighting load, we must consider them for step 8 for motor loads. Remember, in terms of 430.24 when we add this load amount to our total VA we are not adding the base amount (this would be the amount covered by the above circuits); we are only adding an additional 25%. If the largest motor load in a given dwelling were a ceiling fan or bathroom exhaust fan, then by code that should be the basis for 430.24; this is a very rare though and likely why you have never seen it.
Yes, in our video "Graphics for the National Electrical Code" there is a link in the description to download the PDF's and the video provides step by step directions on where to put them in the NEC!
One of the best walk throughs ever! 20min. instead of 120min. all to the point and simple, thank you!
Exactly. Thank you!!
Hi Bluegrass College. I'm getting my electrical license, and is an excellent demonstration and explanation of definitions, thanks you very much. It's very useful.
Thank you!
Great Video.
Thanks for the great video. Really was a good guide. Is it possible to make a video like this but in multi dwelling apartments?
Thanks for posting this lesson. I have a newbie question. Are microwaves and toasters, and other small kitchen appliances typically covered under the "small appliance" circuits? All the examples I looked at have only the two 1500VA circuits. For a large house, there could be more than one kitchen. Not saying this is the norm, but given more than two small appliances are expected, should we be increasing the circuits beyond the two?
Also, is there a distinction made between fixed in place microwaves and countertop microwaves?
Thanks!
The code provides a very loose definition for fixed in place appliances. Article 550 provides a definition for the term, but it leaves much to interpretation. Generally speaking, I provide guidelines that any appliance that requires a tool to remove will usually be considered a fixed in place one. By this definition, you could reasonably make the argument that fixed in place microwave such as an over-range one could be considered for the calculation, while a countertop one would not.
Great stuff! Is it possible to get a copy of that how-to sheet?!
Hi, Awesome video and clear steps but I have a questions that's eating away at me.
In step#6 the last part reads neutral demand 70% per article 220.61(B). Ok, The reason I am able to do this is because after using table 220.55 and applying the demand factors I have now determined my maximum unbalanced load and now the 70% applies or is it something else?
Hi Christopher, I'm not really sure if I understand what it is you're asking. In step 6 basically we are using table 220.55 to determine the load requirements for the range/cooking unit. This amount would apply to our non-grounded circuit conductors of the service. 220.61(B) then allows us to reduce that amount to 70% of its total when calculating the ungrounded circuit conductors.
One more question Step 8. The article you referenced 430.24 Several motors. Ok is is assumed that since motors are included in the small appliance branch circuit that, since its load is on the small appliance branch it will have other loads? If not I don't see how this article would apply the part that gets me is 'motors and other loads'
Hi again, Christopher. We do not ever assume a motor will be covered by the small appliance branch circuits. Any fixed in place motor loads must have their loads included independently.
@@electrical1019 I guess I'm asking because Article 210.23(A) allows for a branch circuit to supply lighting units and or other utilization equipment or a combination of both, and shall comply with 210(A)(1) and (A)(2).
With out this article we wouldn't be able to have the Bathroom fan motor and fan light on the same circuit also doesn't Article 210.(C)(3) Exception allow for the small appliance branch circuit in a bathroom to supply outlets for other equipment within the same bathroom, so in this case the bathroom fan motor and light are already taken into account as part of the Bathroom Branch Circuit at 1500VA? I'm confused as I have never seen a ceiling fan on a load calculation or bathroom exhaust fans even though the ceiling fan is about 75watts and 35 watts for a exhaust fan.
Hi Christopher, I believe I understand your question better now. Yes, you are correct in your reference to 210.32(A) and 210.11(C)(3), however, even though the examples you list would likely be covered by a small appliance branch circuit or by the general lighting load, we must consider them for step 8 for motor loads. Remember, in terms of 430.24 when we add this load amount to our total VA we are not adding the base amount (this would be the amount covered by the above circuits); we are only adding an additional 25%. If the largest motor load in a given dwelling were a ceiling fan or bathroom exhaust fan, then by code that should be the basis for 430.24; this is a very rare though and likely why you have never seen it.
Good day sir, pls how can I get this book.
Is there a way to get a copy of those handouts?
Yes, in our video "Graphics for the National Electrical Code" there is a link in the description to download the PDF's and the video provides step by step directions on where to put them in the NEC!
Do we need to measure the square feet of each level of the dwelling? E.g. first floor, second floor, third floor?
Yes, all living space of the dwelling must be included.
Just look at the floor plan
Great but I don't think they'll let me use a code book that has highlights, hand written foot notes, and extra pages glued on it.
I’ve look at the 2011, 2014 and 2017 cannot find table 310.12 anywhere.
I think it’s 310.15(b)(7) or the 83% rule
Yes, that is what the table is based on. To answer your question, though, table 310.12 was added new in the 2020 code.