single motor

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stjohnbarleycorn

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2005 code:
240.4 (D) small conductors #14 is good for 15 amps

240.4 (E) (6) single motor taps you can use #14 for 20 amps

my understanding of "taps" is circuits with a overcurrent device larger than the smallest conductor.

is there another reference where is says you can use #14 for 20 amps for a single motor? Or are they saying a single motor tap is the same as a single motor branch circuit? thanks for some clarification.
 
240.4(G) allows you to use the conductor at it'a rated ampacity in 430 Parts III,IV,V,VI. Barring some other limiting factor (temperature, fill, NEC 110.14}C}, etc)., it would be permissible to use #14 on any motor circuit requiring a conductor rated at 20 amps.
 
Thanks, 240.4(G) also specifies 440 III, VI


In part VI, 440.55 cord and plug air conditioner, This would allow us to use #14 as a 20 amp conductor in a single branch circuit in a dwelling unit? After de-rating for continuous use we could still run 16 amps on it, and use a 20 amp breaker?

thanks again for any help on this. kevin
 
stjohnbarleycorn said:
Thanks, 240.4(G) also specifies 440 III, VI


In part VI, 440.55 cord and plug air conditioner, This would allow us to use #14 as a 20 amp conductor in a single branch circuit in a dwelling unit? After de-rating for continuous use we could still run 16 amps on it, and use a 20 amp breaker?

thanks again for any help on this. kevin
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Before someone takes this ball and runs down the wrong path, I think it is impotant to note that "room air conditioners" are Part VII and not included in Part VI.
 
augie47 said:
Before someone takes this ball and runs down the wrong path, I think it is impotant to note that "room air conditioners" are Part VII and not included in Part VI.
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Good comment Gus, the rules in an article part only apply to that part, unless its part 1 general, which applies to the entire article.
 
augie47 said:
240.4(G) allows you to use the conductor at it'a rated ampacity in 430 Parts III,IV,V,VI. Barring some other limiting factor (temperature, fill, NEC 110.14}C}, etc)., it would be permissible to use #14 on any motor circuit requiring a conductor rated at 20 amps.
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So basically it is OK to use table 310.16 at face value in the examples in 240.4(G)?
 
So basically it is OK to use table 310.16 at face value in the examples in 240.4(G)


That might be a little strong. One must remember restrictions such as 334.80 and 338.10(B)4
 
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