10 foot tap rule

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qec

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I am bidding a job in CT for a renovated restaurant. The plans call for a 3 phase 600 AMP service, with 3 200 Amp panels connected through a trough adjacent to the disconnect/CT cabinet. Can I connect the 3 panels with a triple lug on each phase within 10 feet off the load side of the main 600 disconnect with 3/0 CU and save the money on the interior 200 amp switches and guts??
 
Your not going to be able to avoid using Main breaker panels.

The NEC might allow you to skip the 600 disconnect if the power company is not requiring it for cold sequence metering.
 
Brian 'Cold Sequence' is what a few of the power companies around here require on services above 250 to ground.

Cold sequence just means I have to provide a disconnect on the supply side of the metering.

Hot sequence is the standard method, no disconnecting means on the supply side of the metering.

I once asked Charlie E (The Utility Guy) about this and he said it was a common power company term.

Bob
 
iwire said:
Brian 'Cold Sequence' is what a few of the power companies around here require on services above 250 to ground.
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We deal with several utilities in our area. PEPCO requires this on any 480 VAC services, Dominion Power I am not sure without checking their Application Book, NOVEC, SMECO and BG&E I seldom deal on installs
 
Thanks for the responses, in this market I am trying to cut every cost I can. I definitely need a 600 switch, I was trying to avoid purchasing the add on kit to the Main/CT cabinet and use 200 main breaker panels, with further review it may be cheaper to install the 200 Amp switches in the switchgear with the 600 main and CT Cab and use main lug panels.
 
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