Does the secondary conductors of a transfomer constitute a new "service" with regards to being in a raceway by themselves according to article 230.7? We are installing a 112kva transformer in an new electrical switchgear room that is going to feed a 400 amp lighting panel. The panel has a main breaker.
transformer conductors
- Thread starter fester
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bdarnell
Senior Member
- Location
- Indianapolis, IN
- Occupation
- Retired Engineer
No. These are feeder conductors, not service conductors. Nothing on the load side of the main disconnecting means is a service conductor.
- Location
- Logan, Utah
Take a look at 240.21(C) for overcurrent protection of transformer secondary conductors, they are treated more like tap conductors then feeders. Also a transformer is a separately derived system so take a look at 250.30 for the grounding requirements.
Chris
Chris
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