ECN Forum Forums Photo Discussion Forums Photos for General Discussion Ground Wire in Emt - Not Bonded at Ends

Just to make life easy.... I use schedule 40 for things like this Not to mention the corrosion factor for my area... If necessary I just use the armored ground wire with the proper clamps, nice & clean

Randy

I was watching a video Mike Holt produced, and he claimed to have read from IEEE that the inductive choke can be as high as 97% on this type of installation.

I've never seen that figure personally, but that is what Mr. Holt says.

Ryan hit it on the head. When I was still teaching high school electricity we had a video that had a bit about a hi amperage short through a metal pipe. The choke was so great it blew a hole in the pipe and the blew the wire in half. With the bushings/bonding in place the pipe becomes a part of the wire and the choke factor goes away.

Cool guys, I had heard from Bennie and an engineer that the choke effect was not as much of a problem as the NEC would have us believe.

Regardless of that the code requires the bonding so bond I will.

Bob