Pulling solid wire thru conduit?

[TOOL_5150]

The oldest book I have is from 1987 and says:

hmm The building, I would guess was from the late 70s. Maybe it just simply was not inspected.

~Matt

 

[220/221]

310-3 Stranded Conductors. Where installed in raceways, condcutors of size No. 8 and larger shall be stranded.

IMO they should change it to No. 10 and larger.

Using #10 solid is stupid. I had to fight with some just last week on an existing circuit. I pull out old #8 solid once in a while and I always ask "What were they thinking?"

 

[infinity]

IMO they should change it to No. 10 and larger.

Using #10 solid is stupid. I had to fight with some just last week on an existing circuit. I pull out old #8 solid once in a while and I always ask "What were they thinking?"

I've been saying this forever. With value engineering I see more and more jobs with fully stuffed conduits, 16-#10's in a 1" EMT or 28-#10's in an 1.25" EMT. Making these pulls with solid #10 condcutors is just plain stupid if not impossible. Factor in when the pipe guy installed a "C" condulet in the middle of the run and you're really in trouble. :roll:

 

[flashlight]

...

I had to fight with some just last week on an existing circuit. I pull out old #8 solid once in a while and I always ask "What were they thinking?"

I think they were thinking they were saving money (forgetting about the
additional labor)

 

[Microwatt]

I've been saying this forever. With value engineering I see more and more jobs with fully stuffed conduits, 16-#10's in a 1" EMT or 28-#10's in an 1.25" EMT. Making these pulls with solid #10 condcutors is just plain stupid if not impossible. Factor in when the pipe guy installed a "C" condulet in the middle of the run and you're really in trouble. :roll:

28 solid #10's in one conduit???? How many are current carrying conductors?

 

[infinity]

28 solid #10's in one conduit???? How many are current carrying conductors?

Typically 20 or less. Using #10's for derating on 20 amp circuits.