Help !!

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crickets77

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I recently took a test that asked this question.....

A dedicated branch circuit rated at 20 amps has a single piece of equipment permanently installed that is rated at 12 amps. Provisions are present on the same circuit to provide for cord connected devices also. How many cord connected devices are permitted on this circuit ??

A) 5
B) 10
C) 2
D) 0

I have looked for hours in the code book to find an answer to this question !! I answered " D " on the test but I don't know if I was right or wrong.....They just give you a score. If anyone can find the answer to this question please HELP !! Also can you include the Article and Section where you found it so I can see it for myself. Thank You
 
DanZ said:
It's because it's a dedicated branch circuit, right?
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It is because, as soon as something else is plugged into the circuit, it becomes subject to 210.23(A)(2) which limits the fastened in place piece of equipment to 50% of the circuit ampacity, in this case 10 amps.
 
I'm sure D) was the answer they were after, but as quoted in the OP, I don't think the question has a correct answer. D) would be the correct answer only if they were asking about cord connected devices not fastened in place.
 
eprice said:
I'm sure D) was the answer they were after, but as quoted in the OP, I don't think the question has a correct answer. D) would be the correct answer only if they were asking about cord connected devices not fastened in place.
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Nice catch. :cool:
 
I agree that it is a poorly worded question. First, a "dedicated" circuit would not have fastened in place equipment AND cord and plug connected equipment on the same circuit. However I agree that as given "D" is the only possible answer. IF a circuit serves both fastened in place and cord and plug connected equipment then the fastened in place equipment may not exceed 50% of the rating of the circuit. Since the fastened place equipment already exceeds 50% then NO cord and plug connected equipment would be allowed.
 
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