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pipe fill #94209
07/18/05 02:11 PM
07/18/05 02:11 PM
watersparkfalls  Offline OP
Member
Joined: Mar 2005
Posts: 222
Washington...Not DC
will a 6-3 romex fit in a 3/4" pvc?
not sure how to calculate the 53% single conductor.

thanx,
h2o

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Re: pipe fill #94210
07/18/05 04:19 PM
07/18/05 04:19 PM
G
George  Offline
Member
Joined: Feb 2002
Posts: 375
I believe for Southern Wire Corp the diameter is .683".

Re: pipe fill #94211
07/18/05 04:47 PM
07/18/05 04:47 PM
W
winnie  Offline
Member
Joined: Sep 2003
Posts: 649
boston, ma
Take the largest diameter across the cable. Calculate the cross section area is if the cable were round with this diameter. (PI*D^2)/4

Divide this by the internal area of the conduit. If the answer is less than 0.53, you are good to go.

-Jon

Re: pipe fill #94212
07/18/05 08:09 PM
07/18/05 08:09 PM
E
Electric Ian  Offline
Member
Joined: Feb 2004
Posts: 133
MA, USA
Looks like you need to go to 1"

assuming .683 diameter:

Area = Pi*r^2 = 3.14*.3415^2 = .366
assuming sched 40 PVC:
max allowable 53% fill area for 3/4" is .269 (too small)
max allowable 53% fill area for 1" is
.441 (that'll work)

Re: pipe fill #94213
07/19/05 02:04 AM
07/19/05 02:04 AM
watersparkfalls  Offline OP
Member
Joined: Mar 2005
Posts: 222
Washington...Not DC
thanx guys....

h2o


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