80% rating of branch circuit

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brother

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Been reading up on the code and just been thinking. Whats your answer/opinion to this question. ill give the link to the answer later, but i just seems to me that there are more articles in the NEC that one just cant seem to enforce, like 210.23(A)(1). Can you really stop a home owner from pluggin more stuff in over 80%??


question said:
Is a 28-amp electric clothes dryer plugged in to a 30-amp individual branch circuit in compliance with the permissible loads of NEC 210.23, or does the 80 percent rule apply?
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Brother, If you go by 210.23(B) 30a branch circuit, shall not exceed 80% of

the branch-circuit ampere rating. 28a exceeds 80%.
 
benaround said:
Brother, If you go by 210.23(B) 30a branch circuit, shall not exceed 80% of

the branch-circuit ampere rating. 28a exceeds 80%.
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Interesting you should say that, read that article again and then give me your answer. ;) by the way, heres what one 'writer from the iae' magazine had said

Raymond W. Weber said:
Thus, the question asks if a 28-ampere load is acceptable on a 30-amp individual branch circuit, and the answer is yes, as long as that is the only utilization equipment on that circuit with one outlet or receptacle. The 80 percent rule applies when two or more outlets or receptacles are installed per 210.23(A) through (D). — Raymond W. Weber
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heres the link, http://www.iaei.org/subscriber/foc/cmp2.htm
 
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Brother, I say Mr. Webber has got it wrong. There is no where in 210.23(B)

that states "more than one" or " two or more " outlets. I think Mr. Webber

is using the requirements in (A) 15 and 20 ampere branch circuits by mistake.

I fail to see where the 28a dryer could comply. What's your take?

edit: unless the dryer is direct wired, ie. not cord and plug.
 
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benaround said:
Brother, I say Mr. Webber has got it wrong. There is no where in 210.23(B)

that states "more than one" or " two or more " outlets. I think Mr. Webber

is using the requirements in (A) 15 and 20 ampere branch circuits by mistake.

I fail to see where the 28a dryer could comply. What's your take?

edit: unless the dryer is direct wired, ie. not cord and plug.
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Well my take was originally like yours, that it would be a violation, but after reading the first part of 210.23 Permissible Loads. -.....A branch circuit supplying 2 or more outlets or receptacles shall supply only the loads specified according to its size as specified in 210.23(A) thru (D) and as summarized in 210.24 and Table 210.24.

I will have to agree with Mr. Webber take on this one.
 
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