360 degree maximum

[SSDriver]

In humid areas they entire horizontal run can be filled easily just from condensation forming inside. Once you get to point where air flow is impeded condensation probably lessens.

I recall burying a PVC conduit on hot humid summer day one time, then came back to pull conductors the next day. Pull rope was pretty damp when pulled out after just one day. The humid air condenses when it hits the cooler walls of the underground portion of the raceway.

Makes since. Not so humid here, so it's not as big of an issue.

 

[garbo]

Construction is routing 6, 1/C control cables #14AWG in a FOUR inch PVC underground conduit - they have approximately 500 degrees of bends - there is no way they’ll damage the cable with such a small conduit full

Im not the AHJ but it seems this should be allowed - opinions?


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During my 50 years as a sparky never got to use a power puller but always try to keep runs under 270 degrees. Hardest pull ever was pulling 6 # three ott THW wires thru over 400' of rigid conduit thru at !east 3 LB condulets during hottest humid day. Think I lost 15 pounds sweating so much. A!ways used a quality wire lube. Some jobs we would use the next size up LB'S to make final pull thru consumer a lot easier. Questioned contractors a out them pulling large wires thru over 500 degrees in bends without a pull box. Told me it was okay because study were using a large power puller. Some sparkies would constantly install LB'S facing wrong direction on high ceiling pulks. Found it faster & easier to only pull large wires from only one large sizzle lift with second crew on ground when ever pissible.

 

[kwired]

During my 50 years as a sparky never got to use a power puller but always try to keep runs under 270 degrees. Hardest pull ever was pulling 6 # three ott THW wires thru over 400' of rigid conduit thru at !east 3 LB condulets during hottest humid day. Think I lost 15 pounds sweating so much. A!ways used a quality wire lube. Some jobs we would use the next size up LB'S to make final pull thru consumer a lot easier. Questioned contractors a out them pulling large wires thru over 500 degrees in bends without a pull box. Told me it was okay because study were using a large power puller. Some sparkies would constantly install LB'S facing wrong direction on high ceiling pulks. Found it faster & easier to only pull large wires from only one large sizzle lift with second crew on ground when ever pissible.

Power puller for me is usually backhoe, forklift, scissor lift... Have even had crane a time or two on site that was used, usually a smaller crane on straight truck, that belonged to the site owner. Big cranes we seldom ever asked for any favors other than to lift items to elevated locations.

 

[jap]

The difference is that a tugger set up correctly uses the conduit itself to pull against whereas other pulling devices that may be more readily available such as a truck, backhoe, scizzor lift, or the like do not.

JAP>

 

[Tulsa Electrician]

An example

 

[jap]

An example

 

[LarryFine]

The difference is that a tugger set up correctly uses the conduit itself to pull against whereas other pulling devices that may be more readily available such as a truck, backhoe, scizzor lift, or the like do not.

Years ago, back when I was a helper, I set up a tugger to pull a feeder up into a panel from an underground conduit. As the pull progressed, and the head reached the panel, I realized that I wouldn't be able to pull any wire into the cabinet without bending the bottom of the cabinet and pulling the conduit out of the dirt. (basement floor not poured yet.)

So, I cut a V notch in the end of a short 2x6 to straddle the connector, or end of the conduit (don't remember conduit type), to transfer the force to the conduit so I could pull a few feet of wire in. How do you normally pull wire in without the head of the tugger being in the way, and the pulling head won't fit through the hole in the end of the pulling arm?

 

[jap]

Years ago you had to be crafty like you were if you didn't have the collars.

Modern tuggers have a collar on an extension arm to fit different size conduits to exert the force on the conduit

The tugger sits back away from the actual point of entry to the conduit.

JAP>