Commercial equipment

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anonymousparky

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Washington
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Electrician
I have worked on commercial jobs before but have not done anything this size and have a plan but am wondering if there is another option. I am looking at a 1200 amp CT can. 800 amps goes into 1 building and 400 to another. The 400 will feed small subpanels and isn't an issue.

The issue I'm wondering is there any way around having to do main distribution on 800 to save costs? I have 2) 200 amp panels where power comes into the main building, and 2 separate ones across the building. I am looking to do 2 panels and 2 disconnects in the main room. Is there anyway to hit 4) 200 amp pieces of gear without a main distribution?

Meter of course is mounted right by the CT can. CT will have It's own stand 15 feet from the telephone pole, be concreted in and protected by concrete bollards. 400 amp building is 30 feet from CT and 800 is about 40 feet away from CT.

It is 120/240 3 phase with a 208 high leg

Thanks for any input.
 
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Depending on what kinda facility it is you might look at a 480/277 upgrade.
 
You can bring the service conductors into a wireway and feed up to six grouped panels or disconnects
 
anonymousparky said:
Yes but does a CT can have 5 places to land on load side? I have only ever seen 4.
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Come out of the CT with the 800A service conductors, probably parallel sets of 500 or whatever, then when you hit the building set a 3R wireway with moles to tap off your four disconnects.
Whats the calculated load of the building?
I did a job like that had CT can to vault ductbank to another vault then to a wireway and 400A disconnects.
The vaults were just for the wire pull angles.
 
gene6 said:
Come out of the CT with the 800A service conductors, probably parallel sets of 500 or whatever, then when you hit the building set a 3R wireway with moles to tap off your four disconnects.
Whats the calculated load of the building?
I did a job like that had CT can to vault ductbank to another vault then to a wireway and 400A disconnects.
The vaults were just for the wire pull angles.
Click to expand...
It's still in the planning phases. I'm just trying to figure out main gear as customer is trying to get initial costs in his head. All I know so far is the above stated requirements. I have just never transfered from a parallel run to 4 separate, equal pieces of equipment.
 
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