A 200 amp service has a meter and, per local code, a 200 amp disconnect on the outside of the building that is the service disconnect and a 200 amp overcurrent device. The interior panel is fed from the 200 amp disconnect with SER cable, which by definition, is a main power feeder. If the SER cable is encased in insulation, does the requirements of 338.10(D) apply to main power feeders?
De-rating SER cable
- Thread starter wyboy
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