I am doing a rewire on a existing house and changing the 100 amp meter base and panel to a 200 amp meter base and panel. I have a meter base with a 200 amp main breaker located inside of meter housing and need to run 50' of 2/0 copper ser or seu service entrance cable to feed the new 200 amp panel. Is this ok to run? I will be coming straight up from meter base with conduit into attic and installing the se cable in a unfinished attic area. The condit is only a 20" section.
Seu or ser service entrance cable
- Thread starter tdaug53
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Once you leave the meter base with the 200 amp OCPD you'll need to run 4 conductors in conduit or SER cable.
- Location
- Logan, Utah
I agree with Rob,
After you hit your service disconnecting means (200 amp breaker) the feeder to the panel must have a separate neutral and equipment grounding conductor.
Chris
After you hit your service disconnecting means (200 amp breaker) the feeder to the panel must have a separate neutral and equipment grounding conductor.
Chris
bphgravity
Senior Member
- Location
- Florida
Would a 3-wire SEU in a metal raceway be sufficient or acceptable?
If you are under the '08 Code you might wish to discuss with your inspector his take on 338.30. SE ampacity has been a much debated topic here with the wording of that section in the '08 Code. You inspector may not accept 2/0 Cu SE (interior) as suitable for a 200 amp service.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
If the meter/ combo disconnect has no other breakers in it then Imo, 310.16(B)(6) trumps art. 338.
I agree with Gus you need to check with the ahj on this. If I were doing it and it is in an attic I would pipe it the entire way and then use copper 2/0.
I agree with Gus you need to check with the ahj on this. If I were doing it and it is in an attic I would pipe it the entire way and then use copper 2/0.
Umm... there is no 338.30 in the 2008 NEC.
Perhaps you mean 334.80 by way of 338.10(B)(4)(a).
I agree 310.15(B)(6) trumps that.
yep :smile: old folks (like me) don't need to go by memory
and I (and others) don't, thus my suggestion, ask YOUR inspector.:smile:
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
That is the big question. Table and article 310.15(B)(6) says it is allowed for the given situation. I see 338.10(B) as covering everything else. This is obviously an oversight by the CMP. I am sure it will be clarified in 2011.
From here: http://www.nfpa.org/assets/files/PDF/ROP/70-A2010-ROPDraft.pdf, it appears they may have, but I still don't see it being as clear as possible. When I read the draft of 338 & 310, I read that 338 trumps 310 but I have no doubt others will read differently. Perhaps, before final adoption, it will be more clear.
The reason I do not agree with your interpretation is because 310.15 refers to a specific feeder, namely a "main power feeder", and elaborates on the parameters which qualifies a feeder as such.
In looking at 338.10(B)(4), I see it as a more general, broader scope requirement as it is regarding, as its main title reads, "Installation Methods for Branch Circuits and Feeders".
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