I need to run power to my loafing shed for lights, fans and blowers for show livestock. The blowers pull almost 20 amps each so here is my plan.
Underground service using 4 awg thwn in conduit. 130 ft run.
60 amp breaker in main panel
Outdoor Sub panel in shed. The shed is covered on 3 sides and front is open.
2 ground rods at subpanel. May have to install horizontally due to rock in ground
3 circuits coming off subpanel. 2 dedicated for the blowers. 3rd will be for lights, fans and stock tank heater. All outlets will be 20 amp on gfci.
Obviously stock tank heater will be close to water so I will use liquid tite conduit there.
My questions are
Do I need a gfci breaker for the 60 in the main panel? Will 4 awg wire fit in a 60 amp breaker? Is 4 awg large enough? Can I use aluminum? Is 1" conduit large enough for 3 4 awg wires. I will not need 240 so only three wires
I have found hundreds of threads on how to run power to a shed but this is different since it's not completely protected from the weather.
Thank you for your help. A couple of things I left off. One is I'm out of city limits and no imspection required, but obviously want to do this safely. Two is the structure is wood frame with metal siding/roof.
After some more research and reading here, I've come to the conclusion of running 1 awg Al as my feeder. My current shop panel this will feed off of is wired up with 2 awg Al.
Another problem is getting the 1 awg Al hooked up to the 60 amp breaker. My plan is using one of the Polaris insulated connectors. Anything wrong with that? If I understand correctly I can connect my Al with Cu with no problem with corrosion.
If everything I run is 120V, will running 240V to this shed help anything?
I get the idea of using 240V for the blowers, but we take them on the road to shows and there are no 240 outlets available. I will have to buy two sets of blowers. One to use at home and one on the road.
As far as using 60 over 100, I don't know. Just have to pick something I guess and go with it. The 100 sounds like a good idea.
I did look at my neighbors setup today and his is very similar. I am concerned now because his subpanel is wired with 2 awg Al on a shorter run and he said the blowers will trip a breaker on startup during the winter. After the breaker is reset everything is fine. He is also using an extension cord off his panel. I run into the exact same problem currently when I use my metal chop saw. It trips on startup and works fine after reset. My idea is to wire up gfi's maybe using 10 awg off my panel.
I do believe the weak link will be one I cannot easily fix. My shop is about 150' from the meter. The electrician who wired it used 2 awg Al up to there. I found some 2-2-2-4 Al mobile home feeder at Lowe's today for $1.50/ft. I think I will use it ran in some conduit unless somebody tells me that is a bad idea.
Again thank you very much to everyone for your help with this.
He's tripping the 20 amp branch circuits.
I do have one more question. The scenario is my shop is concrete floor with metal framing and siding. Panel is mounted to wall via struts. #2 Al ground wire is ran from the meter to the panel. I don't believe they ran a separate ground rod to the panel. I already have a ground rod right outside the building where we had some lightning rods installed. Am i going to hurt anything by running a ground wire from the panel grounding bar to the ground rod? It's going to cost me a few dollars for 6' of Cooper wire to do it and next to zero effort.
Also was thinking about burying a ground rod in the trench for my water line and use it to ground the water tank (run the wire into the tank) where the heater will be locate. This is what the manufacturer of the heater recommends. Then tie it into the ground on the outlet box where the heater plugs in. Good idea? I assume it's impossible to have too many grounds?