Breaker in a switchgear that's not connected to the bus
- Thread starter DoubleE7
- Start date
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Another C10
Electrical Contractor 1987 - present
- Location
- Southern Cal
- Occupation
- Electrician NEC 2020
From this drawing it appears to me that a Breaker protected 480v panel with ( control ? ) feeds the line side of a breaker inside the same enclosure which that source is regulated using the floating breaker within the same enclosure from were it originated, which then feeds the 480v heater.
Why wouldn't they add another panel next to the original 480 panel allowing protection of the heater outside the switch gear. It looks like someone was trying to utilize an existing wiring system, to accommodate their own intention.
I'm not sure if it violated any code other than being confusing as ---
Why wouldn't they add another panel next to the original 480 panel allowing protection of the heater outside the switch gear. It looks like someone was trying to utilize an existing wiring system, to accommodate their own intention.
I'm not sure if it violated any code other than being confusing as ---
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
It seems curious that they would put it inside the switch gear but it could just as easily have been in the panel board.
kwired
Electron manager
- Location
- NE Nebraska
Presuming there is a breaker in the "480 panel" why would you run the circuit back to the "switchgear" in the first place?
Running it back to a spot adjacent to the "switchgear" makes sense if the heater is in the vicinity of the gear, but why not provide separate disconnect if that is what it is all about?
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