Need to size parallel service
- Thread starter manny
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hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: Need to size parallel service
Re: Need to size parallel service
Manny If you are trying to run parallel conductors from the meter pan to service equipment then the code say's they must be the same size,lenght,and of the same material (cu or al)
310.4 Conductors in Parallel.
Now if you are trying to make a service entrance tap you can as long as the conductors dont enter a building more than what it takes to go to the main breaker and can be sized to the load or main breaker that they will feed.
230.40 Number of Service-Entrance Conductor Sets.
VII. Service Equipment ? Overcurrent Protection
230.90 Where Required.
In general 230 need to be read throughly
Re: Need to size parallel service
Manny If you are trying to run parallel conductors from the meter pan to service equipment then the code say's they must be the same size,lenght,and of the same material (cu or al)
310.4 Conductors in Parallel.
Now if you are trying to make a service entrance tap you can as long as the conductors dont enter a building more than what it takes to go to the main breaker and can be sized to the load or main breaker that they will feed.
230.40 Number of Service-Entrance Conductor Sets.
VII. Service Equipment ? Overcurrent Protection
230.90 Where Required.
In general 230 need to be read throughly
- Location
- Massachusetts
Re: Need to size parallel service
Re: Need to size parallel service
I do not understand what you are asking
Are you talking about runing from the 400 amp meter can to one 400 amp panel?
In this case the answer would be no you can not mix wire sizes 310.4 Conductors in Parallel as already said.
Or are you coming from the 400 amp meter can to two seperate panels, this is not Conductors in Parallel. In this case you could run differnt size conductors, based on load or OCPD
If you post more info it would help.
Bob
Re: Need to size parallel service
Manny,
I do not understand what you are asking
Are you talking about runing from the 400 amp meter can to one 400 amp panel?
In this case the answer would be no you can not mix wire sizes 310.4 Conductors in Parallel as already said.
Or are you coming from the 400 amp meter can to two seperate panels, this is not Conductors in Parallel. In this case you could run differnt size conductors, based on load or OCPD
If you post more info it would help.
Bob
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