romex in conduit

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Re: romex in conduit

allenwayne. You stated A/C line cover. Is that the same as a Hot Stick? I have seen a Hot Stick used to cover S.E.R. for the service drop. Thank you.

Justin
 
Re: romex in conduit

What method or table would you use to size the grounded, neutral, conductor appropriately for a situation like this? While on the subject what about the equipment ground size as well.

Thanks in advanced.

Norb
 
Re: romex in conduit

Originally posted by justinjwalecka:
allenwayne. You stated A/C line cover. Is that the same as a Hot Stick? I have seen a Hot Stick used to cover S.E.R. for the service drop. Thank you.

Justin
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Justin, a 'Hot Stick' to me would be a fiberglass pole used to pull primary cut-outs.

What you describe to me would be 'Line Hose.'

I think that Allen is talking about Air Conditioner Condensate Line Insulating Wrap???

BTW, I don't think any of those will do.
 
Re: romex in conduit

Rickl,
I calculated the number of romex 12-2 with ground cables that can be placed into a 2" rigid conduit as 9 cables. I used a width of 7/16" per cable. I also calculated 17 each 12-3 with ground cables in a 2" rigid conduit using a width of 5/16" for each cable. This type of calculation is per Table 1 Note 9 in Chapter 9 of the NEC. If you use a multiconductor 12-3 for 2 circuits each, you can get 34 circuits into a 2" conduit. You would have to know the load for all circuits and use table 310.15(B)(2)(a) for ampacity adjustment factors. Article 334 says that you can use the 90 degree column of Table 310.16 for adjustment factors but can not place more current on each conductor than in the 60 degree column.
 
Re: romex in conduit

thanks for doing the calc on that, 9 cables in a 2" is that 40% or 60% fill ( my conduit is over 24")also 310-15(b)2 after 9 #12 current carrying conductor you need to derate 60%, thats 18 amps then i would have to go with 15 amp breakers or #10 conductors. correct me if i'm wrong.
 
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