Well, here's the deal, that is a plumber's tape, no if and or but about it. Plumber uses that to try to ram his way through an obstruction before bringing in the big bad power snake.
Electricians used to use tapes that were 1/4 wide and about 1/16 thick for conduits over 1" diameter.
Today the electricians tend to favor fiberglass rod ovr the heavy tape.
Really smart electricians generally tended to have a 200 foot plumbers tape stashed in the truck, before fiberglass rods. The plumbers tape will run through conduits bigger than 2" slicker than snot on a doorknob because it's stiffer than a 1/4 tape, and those nice wheels on the end roll right over couplings and through bends where the small hook gets hung up.
The tape itself pretty much don't care which trade uses it.
Plumbers tapes are also damn handy for sliding across the top of ceilings and crawlspaces.