How can I stop being electrocuted?

Because they carry significantly higher voltage than copper cables, you actually need to put multiple layers of insulation on gold cables. (You can do this by crafting the insulated cables with more rubber like you to do get them in the first place).

Having said that, I believe you may still take a small amount of damage even from 2x insulated gold cables. Consider concealing your wiring entirely.

You need to insulate your gold cables multiple times. Same with HV iron cables if you eventually start using those. Your best bet is to insulate your cables as much as you can and then perhaps seal them off in a "maintenance area".