What does it mean to ground through a switch?
Here’s what it means at the utility where I am employed as a Power System Operator:
_________ / __________
. . bus A . . . .bus B . . .
Work to be done on bus A
Either there’s no handy spot for the tradespeople to apply working grounds or there are no permanently installed grounding devices on it
Bus B either DOES have a handy spot for the tradespeople to apply working grounds or has permanently installed grounding devices on it
Remove both the A and B busses from all sources of potential and lock out / tag out
Close or check closed the intervening switch and lock out / tag out in the closed position
a. close permanently installed grounding devices on bus B and issue Work Protection on bus A with intervening switch guaranteed closed for grounding continuity, or
b. issue Work Protection with intervening switch guaranteed closed for grounding continuity, making the requirement for the trades people to apply working grounds a condition of issuance, with this listed in the safety precautions and instructions of the Work Protection
Above is a snippet.