How can there be no give? Didn't you just pull them in? A tugger can do amazing things (including pulling out a tree stump).Unfortunately there is no give in the 4/0. This is not a straight line. So yes, the plan is to find, cut, place a large box and re-connect. I need to find the proper detector in order to find the place of the short.
how are you going to get the box in place with all those conductors?
If the conduit can be isolated from any grounding, it could be done with a fault locator. But it would probably be easier just to repull the wiring.
I would be inclined to make you remove it all if you have damaged one that badly.
Use larger conduits next time.
I was thinking the same thing about the welder that is, probably would damage the other wireI can't find faults in a PVC conduit if there is a bare cu pulled in it. IDK how the heck it could be done in EMT.
Get an old welder, one lead to the emt and one to the damaged conductor, turn it up. Find hole. It should be near the smoke
I have a VON TDR and a VON thumper. Basically the same but one sends a lot of joules at one time to arc across to ground creating a sound like a .22 rifle.I have a TDR but haven't used it for years. I think the accuracy is about +-10%. Not sure how well it would work on 4/0. Equipment has got to be better now than the 30 year old unit I have.