I always do my own own basic vehicle maintenance,i always like to remove ground on the battery just for precaution purposes,couple of months back went to muffler shop to install dpipes,i suggested him to remove ground,he said you don't have to,am I just paranoid or that's normal protocol,if some loyal members could chime in,greatly appreciated.
It's a good idea when welding or doing electrical work. Lol I have blown several fuses from not disconnect the battery lol