DaveBowden
Senior Member
- Location
- St Petersburg FL
I'm bidding a job for a church. They have 2 buildings with a common roof (outdoor area between the buildings is under the roof but you have to go outside to get from 1 section to the other) with an existing 400 amp service. One bulding is being torn down and replaced with a new building. The existing 400 amp main fused service disconnect has 2 risers going through the roof with a ct can at the top of the risers for the metering.
In the existing electrical equipment room (which is in the building that is staying) the feeders leave the 400 amp main and go into a trough which feeds a 200 amp main breaker enclosure, a 125 amp main breaker panel, and 3 200 amp fused disconnects. The main breaker enclosure feeds an existing subpanel in the kitchen (staying) and the 125 amp main breaker panel feeds the remainder of the load on the building that is staying. The 3 200 amp disconnects feed MLO panels in the section that is being torn down.
The engineer has drawn the new service with an 800 amp main disconnect feeding the trough in the equipment room. The 2 panels that feed the building they're in are re-fed in the trough. I don't have any problem with that part. The part I have to question is where he calls for 2 paralleld sets of 350kcmil CU to be fed in the trough and then run underground outside over 300 feet and then back into a new 600 amp main breaker distribution panel in the new building.
I don't like the idea of having 600 amp wire run that far with only an 800 amp breaker protecting it.
Does this sound like a code compliant install?
In the existing electrical equipment room (which is in the building that is staying) the feeders leave the 400 amp main and go into a trough which feeds a 200 amp main breaker enclosure, a 125 amp main breaker panel, and 3 200 amp fused disconnects. The main breaker enclosure feeds an existing subpanel in the kitchen (staying) and the 125 amp main breaker panel feeds the remainder of the load on the building that is staying. The 3 200 amp disconnects feed MLO panels in the section that is being torn down.
The engineer has drawn the new service with an 800 amp main disconnect feeding the trough in the equipment room. The 2 panels that feed the building they're in are re-fed in the trough. I don't have any problem with that part. The part I have to question is where he calls for 2 paralleld sets of 350kcmil CU to be fed in the trough and then run underground outside over 300 feet and then back into a new 600 amp main breaker distribution panel in the new building.
I don't like the idea of having 600 amp wire run that far with only an 800 amp breaker protecting it.
Does this sound like a code compliant install?