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Conduit fill question

T

Tom Lager

Jan 1, 1970
0
I have a question for the experienced electricians in the group. I need to
run a #4-3 type SER cable through an underground conduit. I can find
tables in the NEC that cover conduit fill limits for single conductors, but
not for cabled conductors. Is the cable considered a single wire for this
purpose or 4 wires? Thanks
 
N

newsreader

Jan 1, 1970
0
Per note 9 NEC 2002 Chpt 9 Tables, multiconductor cables are to treated as
single conductor cable. Do get the correct cross section area from
manufacturer specs.
 
Per note 9 NEC 2002 Chpt 9 Tables, multiconductor cables are to treated as
single conductor cable. Do get the correct cross section area from
manufacturer specs.
The cross section is the diameter, based on the widest dimension. If
it gets twisted that will be the swept area when you pull it in.
 
T

Tom Lager

Jan 1, 1970
0
[email protected] (newsreader) wrote in
Per note 9 NEC 2002 Chpt 9 Tables, multiconductor cables are to treated
as single conductor cable. Do get the correct cross section area from
manufacturer specs.

I thought that was correct, just wanted a second opinion. Per Mfr.
diameter is .77" so I can use 3" conduit to meet 40% fill maximum.
Thanks to all who responded.
 

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