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Neutral to first means of disconnect

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kmahl

Member
Location
CO
Occupation
Electrician
Hi all,

Is there a code article stating you must bring neutral off secondary of utility transformer to first means of disconnect? Or can it be bonded and left in transformer
Service is 3P 480 .
 
T

texie

Senior Member
Location
Fort Collins, Colorado
Occupation
Electrician, Contractor, Inspector
Yes, and it is critically important to do so. Not doing so there would be no fault return path to the source. See 250.24 (C). It must be sized per 250.24(C)(1) - (4).
This not one of the areas of the code that should be treated lightly as it is critically important.
 
K

kmahl

Member
Location
CO
Occupation
Electrician
texie said:
Yes, and it is critically important to do so. Not doing so there would be no fault return path to the source. See 250.24 (C). It must be sized per 250.24(C)(1) - (4).
This not one of the areas of the code that should be treated lightly as it is critically important.
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Thank you
 
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