Standby Generator for 4 Wire 3 phase Delta Service with a 208 high pot leg

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Questioning

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Hello,

I'm new to back up generators and am curious if there is a generator i can use for standby emergency power in the case of a power outage for the above service. i read 240v to between all 3 phases, 120v to ground on 2 legs, and 208 to ground on one leg.
 
There are generators available to supply that voltage. Often they are 12 lead generators and you will have to reconfigure the internal lead connections to supply a four wire 240/120 volt system.
 
don_resqcapt19 said:
There are generators available to supply that voltage. Often they are 12 lead generators and you will have to reconfigure the internal lead connections to supply a four wire 240/120 volt system.
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Do you happen to have an example of one of these generators? Thanks!
 
Questioning said:
I'm new to back up generators and am curious if there is a generator i can use for standby emergency power . . . .
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It would be a good practice to choose your terms more precisely. There is no such thing, in the NEC world, as "standby emergency power." Emergency power is addressed in article 700. Two versions of standby power, Legally Required and Optional, are addressed in articles 701 and 702. I always use the term "backup" (as you did correctly), unless I knew whether we were addressing article 700 or 701.
 
charlie b said:
It would be a good practice to choose your terms more precisely. There is no such thing, in the NEC world, as "standby emergency power." Emergency power is addressed in article 700. Two versions of standby power, Legally Required and Optional, are addressed in articles 701 and 702. I always use the term "backup" (as you did correctly), unless I knew whether we were addressing article 700 or 701.
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Ok Charlie,

I will take that into consideration should I have any more questions. Thanks for the suggestion.
 
Emergency means the generator is painted red and is more expensive for installation and maintenance. But we know what you mean!
 
Questioning said:
ok so all three phase 120/240 volt services have a high pot leg?
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Yes, because you would not otherwise get the 240/120 relationship in any common type of service. You would get 208/120, for example.

Strict terminology would call single phase 120/240 and three phase 240/120, with the latter implying a high-leg present (but better to spell it out when context is lacking).
 
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