A system is installed with a feeder of 100 amps 480 volts to a transformer. This transformer produces a ground terminal XO and is bonded at the transformer with the GEC. Service to a 200 main is 4/0 for 200 amps and 2 for system bonding jumper. How far can the service conductors go from the transformer till it reaches the 200 main service disconnect in a industrial building or is there a length? Please list code reference as I cannot seem to locate this information.
Separately Derived AC Ststem
- Thread starter jamesoftn
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jwelectric
Senior Member
- Location
- North Carolina
Try 240.21
- Location
- Lockport, IL
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- Semi-Retired Electrical Engineer
I should think 25 feet. 240.21(C)(3).
billsnuff
Senior Member
- Location
- East of 480sparky
240.21 perhaps, if you are talking about taps and feeders.
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