neutral identification

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epced

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I am on a jobsite that there are 20 purple #14 ga wire pulled from a MCC bucket to a field control station with push buttons and pilot lights.
The neutral which is derived from a control power transformer in the MCC bucket
was pulled to a pilot light in the same bundle of wire and is colored purple.
Is this a code violation or is there an exception for control wiring.
I also would like to know if these 20 wires are counted as current carrying conductors in the raceway, and I need to derate the remaining wire per 310.15?
 
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Hendrix

Senior Member
Location
New England
epced said:
I am on a jobsite that there are 20 purple #14 ga wire pulled from a MCC bucket to a field control station with push buttons and pilot lights.
The neutral which is derived from a control power transformer in the MCC bucket
was pulled to a pilot light in the same bundle of wire and is colored purple.
Is this a code violation or is there an exception for control wiring.
I also would like to know if these 20 wires are counted as current carrying conductors in the raceway, and I need to derate the remaining wire per 310.15?
Click to expand...
Take a look at 200.6 Also 200.2 gives some exceptions.
 
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O

OTT2

Senior Member
Location
Orygun
epced said:
I am on a jobsite that there are 20 purple #14 ga wire pulled from a MCC bucket to a field control station with push buttons and pilot lights.
The neutral which is derived from a control power transformer in the MCC bucket
was pulled to a pilot light in the same bundle of wire and is colored purple.
Is this a code violation or is there an exception for control wiring.
I also would like to know if these 20 wires are counted as current carrying conductors in the raceway, and I need to derate the remaining wire per 310.15?
Click to expand...

What is the control voltage? It is possible that the neutral is not required to be grounded.
 
raider1

raider1

Senior Member
Staff member
Location
Logan, Utah
OTT2 said:
What is the control voltage? It is possible that the neutral is not required to be grounded.
Click to expand...

I agree, what is the secondary voltage of this control transformer?

As for the derating take a look at Exception #1 to 310.15(B)(2)(a).

Chris
 
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