I'm looking at this NEC code question and scratching my head.
I am using NEC 2005 and Table 430.151B referred to in the solution is no longer there.
So, obviously this must have changed since NEC 2002 publication.
Then, I find an equivalent Table 430.251B in NEC 2005.
However, there is no mention of Polyphase Design E motors at all in the Table.
Help me sort through this madness.
Question 1: Am I looking in the right place? At the risk of sounding ignorant, are Design E squirrel-cage motors not taken into account no longer?
Question 2: If this question is worded such that it is not valid for the current NEC code, then hypothetically what would you suggest a change in the wording to make it into a legitimate practice exam question?
Question 3: Also, is the additional info: 60 Hz, 52A, 0.87 lagging PF at full load all red herrings (i.e. not needed?)
Thanks
I am using NEC 2005 and Table 430.151B referred to in the solution is no longer there.
So, obviously this must have changed since NEC 2002 publication.
Then, I find an equivalent Table 430.251B in NEC 2005.
However, there is no mention of Polyphase Design E motors at all in the Table.
Help me sort through this madness.
Question 1: Am I looking in the right place? At the risk of sounding ignorant, are Design E squirrel-cage motors not taken into account no longer?
Question 2: If this question is worded such that it is not valid for the current NEC code, then hypothetically what would you suggest a change in the wording to make it into a legitimate practice exam question?
Question 3: Also, is the additional info: 60 Hz, 52A, 0.87 lagging PF at full load all red herrings (i.e. not needed?)
Thanks
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