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In my years, ive done grounding from houses up to industrial and a few cell towers too. Lot of cad welding and the weirdest overkill bonding. Worst one i had to do was a 110 foot rod. That one was in a delta field so 3 rods 110 feet apart 110 feet down. When I redid my home service the inspector...

Actually the codes for grounding are 25 ohms or less OR 2 rods. So you can have really dry sandy earth and test a very poor rod and as long as you have 2 meet code. So your ground rods dont actually do as much as you think they do. Sent from my SM-G973U using Tapatalk

Thats exactly why they are called suicide cords. As for the return to bond. Code calls for bonding at the first means of disconnect so its either at the meter or in the panel. If its old enough to have a 3 wire outlet then odds are the bond is in the panel. If it isnt then theres 4 conductors...

Usually 1 gauge smaller, and unless hes really unbalanced it will be fine And its good to see someone else who understands grounding and bonding. Sent from my SM-G973U using Tapatalk

Not quite. In the older 3 wire range and dryer outlets they used to share the same conductor for neutral and ground. Definitely not ideal, nor the best practice, but as indicated above it was going to be replaced with a proper 4wire cable. It will work, but shouldnt be used unless...

Youre welcome. if its 50 then is likely a range outlet Should be #6

I would advise against using it. You would be better off installing a quick backfeed directly to the panel. But if you are going to have to do it for a temporary emergency feed, then leave the bonding strap installed. leaving the strap disconnected without a 4 wire feed leaves you open to...