pipe fill

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pipe fill

#94209 07/18/05 02:11 PM

Joined: Mar 2005

Posts: 240

Washington...Not DC

watersparkfalls Offline

OP

Member

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

Joined: Feb 2002

Posts: 375

G

George

Member

I believe for Southern Wire Corp the diameter is .683".

Re: pipe fill

#94211 07/18/05 04:47 PM

Joined: Sep 2003

Posts: 650

boston, ma

W

winnie

Member

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

Joined: Feb 2004

Posts: 133

MA, USA

E

Electric Ian Offline

Member

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)