Pulling Wires

horsegoer

Senior Member
Location
NJ
Would pulling 4#350& 1 #2 in a 3" conduit be out of the ordinary and a tough pull?
It's ok per the NEC Annex C table. Thanks. Seen this configuration before just wondering if a bit tight. Thanks.
 

Rock86

Senior Member
Location
new york
Occupation
Electrical Engineer / Electrician
You should be alright... what kind of conduit? How many bends? Got the lube handy?

Recently had a job, ConEd tried to pull 2 sets of 750s through 4" pvc with 4 90degree bends... didn't workout too well for them.
 

horsegoer

Senior Member
Location
NJ
You should be alright... what kind of conduit? How many bends? Got the lube handy?

Recently had a job, ConEd tried to pull 2 sets of 750s through 4" pvc with 4 90degree bends... didn't workout too well for them.
It is PVC and THHN/THWN. Might be XHHW.
Three 90 degree bends.
 

Mavipo0221

Member
Location
Florida
Occupation
Plans Examiner / Inspector
Seeing as 3" PVC Sch 80 has a max number of conductors of 5 350 THWN or XHHW, you should be alright, depending on the distance. Wire that size, especially copper, can get pretty tough after a while.
 

ggunn

PE (Electrical), NABCEP certified
Location
Austin, TX, USA
Occupation
Electrical Engineer - Photovoltaic Systems
That's why asking. 36% full is fine right? Under 40%.
36% is code compliant, but whether it is "fine" or not depends on more variables than simply keeping the fill under 40%. If the conduit is underground, then you'd better have sweeps instead of right angles, and you might want to use bigger conduit.
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
The calc I use shows your combination is right at 40% in 2.5" EMT, and right at 40% in 3" sch 40 PVC.
 

acin

Senior Member
Location
pacific grove california
Occupation
general building contractor est.1984 . C 10 elec. lic.as of 8 / 7/ 2020
36% is code compliant, but whether it is "fine" or not depends on more variables than simply keeping the fill under 40%. If the conduit is underground, then you'd better have sweeps instead of right angles, and you might want to use bigger conduit.
Annex c is for informational purposes only .
 
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