Lots of sparks

[LarryFine]

True, but it also takes each case of EGC run inside the conduit and run outside the conduit and compares with steel conduit. In the case of EGC run inside the conduit, more fault current flowed on the EGC than on the conduit. That is the point I was making.

I understand, but the debate is EGC in conduit vs. conduit as EGC. You're saying that, when paralleled, the contained EGC outperforms the containing conduit.

Or rather, the impedance testing suggests that. What kind of impedance testing was done? I'd prefer to see an actual high-current test over an impedance-meter test.

I don't doubt that reactive coupling between the conduit, the line conductors, and an internal EGC will test different than an EGC a foot away from any metal. So what? :-?

You're comparing EGC inside conduit to EGC outside conduit. I say they need to meter real fault current through an in-conduit EGC, and then through just conduit.

 

[LarryFine]

Agree 100% and never said otherwise.:grin:

Well, okay then.