Switchgear feed

[Arkansas74]

Hi
here at the plant we have a 1600amp breaker in on of our switchgear and have 2 800amp pannels. Can we run 2 sets of 500 to each pannel off of the one breaker so 2 sets will run from breaker to pannel and other 2 will run from breaker to 2nd pannel so the 1600 amp breaker will be feeding each on to make both panels for 800 amps

 

[steve66]

no

 

[Arkansas74]

was it legal in the past to do so?

 

[roger]

No again

Roger

 

[electrofelon]

Hi
here at the plant we have a 1600amp breaker in on of our switchgear and have 2 800amp pannels. Can we run 2 sets of 500 to each pannel off of the one breaker so 2 sets will run from breaker to pannel and other 2 will run from breaker to 2nd pannel so the 1600 amp breaker will be feeding each on to make both panels for 800 amps

That is "almost" compliant You could do such a thing using the tap rules in 240.21(B) but note you would need a main breaker in the subs (or separate OCP to comply with 408.36) and you could not use the next size up rule for your taps.

 

[kwired]

Hi
here at the plant we have a 1600amp breaker in on of our switchgear and have 2 800amp pannels. Can we run 2 sets of 500 to each pannel off of the one breaker so 2 sets will run from breaker to pannel and other 2 will run from breaker to 2nd pannel so the 1600 amp breaker will be feeding each on to make both panels for 800 amps

General rules - no, if there is motor loads involved - maybe, take a look at 430 parts II and V.