We are looking at revising the wiring to an existing stadium lighting system.
All of the lighting poles are fed underground in conduit.
A typical lighting circuit has a 30 amp, 3 pole, 3 phase circuit breaker feeding a single pole.
There are four poles fed from one panelboard.
Each pole has its own 3 pole circuit breaker feeding the lights on the top of the pole.
There is one grounding conductor going from the panelboard to all of the poles.
The grounding conductor is tapped at each pole.
The wirenuts that are used to tap the grounding conductor are installed underground. These will have to be replaced.
Question:
Is there a provision in the code that requires that you bring a separate grounding conductor to each pole.
Example: Are you required to run a single grounding conductor with each 3 phase circuit?
All of the lighting poles are fed underground in conduit.
A typical lighting circuit has a 30 amp, 3 pole, 3 phase circuit breaker feeding a single pole.
There are four poles fed from one panelboard.
Each pole has its own 3 pole circuit breaker feeding the lights on the top of the pole.
There is one grounding conductor going from the panelboard to all of the poles.
The grounding conductor is tapped at each pole.
The wirenuts that are used to tap the grounding conductor are installed underground. These will have to be replaced.
Question:
Is there a provision in the code that requires that you bring a separate grounding conductor to each pole.
Example: Are you required to run a single grounding conductor with each 3 phase circuit?