compact service design

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Bud T. McColman

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I am designing a 2500 amp, 120/208v service for a retail/restaurant use renovation. The service will be located in an electrical room that is 8' by 35'. The engineer drew in a wiring trough with no dimentions, (1) 2500a disconn., (8) 200a meter/disconn., (1) 400a meter w/ disconn., and a 1000a disconn. for the restaurant. Is it possible/feasable to feed the meter disconnects with some form of buss duct instead of a huge trough with a mangle of cable and polaris lugs.
 
if you are you flexible in the exact location can you start your line up with the 1000 amp then the 2500 amp then the 400 amp and then the remaining 200 amps set a wireway and lug everything out of the 2500 amp switch? This will use a little more wire, but will save you the polaris blocks and the time to make them up.
 
Bud T. McColman said:
I am designing a 2500 amp, 120/208v service for a retail/restaurant use renovation. The service will be located in an electrical room that is 8' by 35'. The engineer drew in a wiring trough with no dimentions, (1) 2500a disconn., (8) 200a meter/disconn., (1) 400a meter w/ disconn., and a 1000a disconn. for the restaurant. Is it possible/feasable to feed the meter disconnects with some form of buss duct instead of a huge trough with a mangle of cable and polaris lugs.
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Maybe a change is in order. Would a 6 position 2500 amp panel with
1 1000 amp breaker, 1 200 amp breaker and 1 400 amp breaker with 3 spares and no wiring trough be less costly that the proposed installation?
 
I really do like Bob's suggestion, I suffering through about the exact install as the OP was pondering...

If you don't go with Bob's suggestion remember to keep your trough tight in the the "X" direction because any panel face can only be back six inches from the back edge of the trough. This makes extra work, double back deep kendorf or projected panels /meters, no I'm not including pictures. :)

(maybe) U could also install the dreaded trough below ... as I did...
 
bob said:
Maybe a change is in order. Would a 6 position 2500 amp panel with
1 1000 amp breaker, 1 200 amp breaker and 1 400 amp breaker with 3 spares and no wiring trough be less costly that the proposed installation?
Click to expand...

he still needs 7 more 200's and metering. They will not allow cold metering here but I don't know about there.
 
masterinbama said:
sounds like a type of cold sequence metering to me. The 2500amp is the service disconnect and the rest are subfeed breakers with meters
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What I was referring to was a panel without a main breaker. You are allowed to have up to 6 breakers without a main breaker. Each of the 3 breakers would be the main for each meter.
 
Bud T. McColman said:
I am designing a 2500 amp, 120/208v service for a retail/restaurant use renovation. The service will be located in an electrical room that is 8' by 35'. The engineer drew in a wiring trough with no dimentions, (1) 2500a disconn., (8) 200a meter/disconn., (1) 400a meter w/ disconn., and a 1000a disconn. for the restaurant. Is it possible/feasable to feed the meter disconnects with some form of buss duct instead of a huge trough with a mangle of cable and polaris lugs.
Click to expand...
My apology. I missed the point that you had 8 200 amp meters. I some how only saw 1.
 
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