I am having a spa installed in my backyard and am doing all the grunt work for the electrician; digging trench for conduit,etc.I was reading the instructions on electrical and it said to use a 50amp GFCI disconnect at least 5 feet from tub and 4 ft high (will be on side of house adjacent to spa) and to use #6 wire for all 4 conductors--the 2 hots, the neutral and ground. It also said to use #8 for bonding. What is meant by that? Everything else I was looking over made sense. My electrician won't be back in town until next week when the spa will be delivered so I can't ask him. Thanks for the input.

Hi, I need to run power to my garage for welding... the welder has these specs: input volts: 230 - input amps: 52. I've spent hours looking at old threads, but I still haven't answered all of my questions. My hope was to create a 60 amp sub-panel in my garage by running 3 6ga wires through 3/4" conduit - and to put three circuit breakers in this panel (one 50 amp circuit for the welder and one 20 amp circuit for other tools and one 15 amp circuit for lighting). I do not expect to be using the welder at the same time I use other tools. The total length from my main service panel (100amp) to the garage is 80 to 90 feet. I have a grounding rod, and understand these issues. The underground conduit crosses an area that will receive vehicular traffic - I plan to use plastic conduit and bury it 30" deep. Does this proposed sound sufficient? Many thanks! Chris