1 gen, multiple voltage services

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bcm

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Location
Atlanta, Georgia
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Engineer
Dear Shocking Friends,

Once again, I am on the horns of a dilemma and could use some opinions from folks who've seen some weird things.

I have a telecom shelter on a FL rooftop with 2 separate services. Both services come out of a power company room, but the field visit
guy (who works for the client and not for me), couldn't get into the room. He told me:

"I did not open these panels during my walk.
Power Panel #1 appears to be 240V, 225A, THREE phase. Refer to the main breaker.
Power Panel #2 appears to be 240V, 200A, Single phase."

From his photos, it's clear the 240V, 225A panel is actually 120/208V, 225A, 3 ph, 4W (attached pic). But there is no similar photo for Panel 2.
Panel 2 DOES have some 3 pole breakers in it though for a surge suppressor and a "Phase Mon" (phase monitor??) (see other attached pic).

Do you think they'd actually have a 120/20V SINGLE phase service for Panel #2? If so, could one gen back up both panels?
If it really is a 120/240V single phase service in Panel #2, could one gen back up both panels? I'm thinking no.

Does anybody have any insight? I'm just not getting my head around this.

Thanks so much!
 

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Dear Shocking Friends,

Once again, I am on the horns of a dilemma and could use some opinions from folks who've seen some weird things.

I have a telecom shelter on a FL rooftop with 2 separate services. Both services come out of a power company room, but the field visit
guy (who works for the client and not for me), couldn't get into the room. He told me:

"I did not open these panels during my walk.
Power Panel #1 appears to be 240V, 225A, THREE phase. Refer to the main breaker.
Power Panel #2 appears to be 240V, 200A, Single phase."

From his photos, it's clear the 240V, 225A panel is actually 120/208V, 225A, 3 ph, 4W (attached pic). But there is no similar photo for Panel 2.
Panel 2 DOES have some 3 pole breakers in it though for a surge suppressor and a "Phase Mon" (phase monitor??) (see other attached pic).

Do you think they'd actually have a 120/20V SINGLE phase service for Panel #2? If so, could one gen back up both panels?
If it really is a 120/240V single phase service in Panel #2, could one gen back up both panels? I'm thinking no.

Does anybody have any insight? I'm just not getting my head around this.

Thanks so much!

Check your private messages. That building may be one of ours.
 
Sure you can power both. Might require some modifications but anything is possible with the right amount of time and money.

Simplest would be to provide 3ph power from gen, then transformer to get the single phase; different voltage you need.
 
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