we had some of the insulated tools for working on Allison Hybrid drives. You also need the special goves if you really want to be safe. Allison system was nominally 600V ( reality was anywhere between 400 and 900v dc or ac) capable of about 180Kw total power.. system both AC and DC,. depending on which end you were working on. I still remember the stuff, Nickel Metal Hydride energy storage system... which is made of a 6 packs of batterys, 40 NiMH batterys to a pack... so 240 cells in total... every Pack is computer controlled.. then you had the DPIM which was the AC DC converter.. that had its own microprocessor too... then you had the Allison Hybrid drive, which was both a generator and electric motor os well as the starter motor for the engine.. so the drive unit used and produced AC voltage, the DPIM could convert current in either direction and the battery system was DC... and all of it was all shielded and insulated to prevent boneheads from killing themselves. if you so much as disconnected a cover on most of this stuff, it would trigger the hi voltage interlock loop and shut the system down... so you probably have the same thing on these electric vehicles...
realistically the vehicle manufaturers install hi voltage interlocks into this sort of thing, just because the potential to Ted Bundy someone working on it is high.
like anything like that, that battery pack in a EV is sealed... and will have tripled insulation and hi voltage interlock loos, so a real dummy has to work at it to french fry themselves.
funniest thing was the guy from Allison didn't use the insulated tools..
