any electricians wanna chime in here? using #2 alum wire, underground 200'. what size wiring would you run from main breaker box inside the new structure, for all outlets; lights; 220 circuits; and seperate circuits for outdoors on sheds. box will be on one of the 30' walls and will stretch a max of roughly 90-100'? how many ground rods?
I'm not an electrician but if I'm understanding your question you will want to use 20amp breakers w/ 12-2 w/ ground for your lights and outlets. Lights could be on 14 gauge but it really depends on what kind of lights they are. Be sure you use 20 amp outlets. Especially since this is a shop. As far as your 220 circuits it depends on what amp you need based on the size of your welder or what ever is on that circuit. Seems like... never mind. Just searched and found this.
******I hope your using 2/0 wire under ground and not 2 gauge.
BTW why are you running the power to the building yourself? Generally the power company will run it underground to the meter for free if it's a new service. Atleast that's the way Duke power does it. What co. do you have and did you pull permits?
-Also you will use two ground rods eight feet apart.
-Just remember you should only load a circuit 80%
Wire Use
Rated Ampacity
Wire Gauge
Low-voltage Lighting and Lamp Cords
10 Amps
18 Gauge
Extension Cords
13 Amps
16 Gauge
Light Fixtures, Lamps, Lighting Runs
15 Amps
14 Gauge
Receptacles, 110-volt Air Conditioners, Sump Pumps, Kitchen Appliances
20 Amps
12 Gauge
Electric Clothes Dryers, 220-volt Window Air Conditioners, Built-in Ovens, Electric Water Heaters
30 Amps
10 Gauge
Cook Tops
45 Amps
8 Gauge
Electric Furnaces, Large Electric Heaters
60 Amps
6 Gauge
Electric Furnaces, Large Electric Water Heaters, Sub Panels
80 Amps
4 Gauge
Service Panels, Sub Panels
100 Amps
2 Gauge
Service Entrance
150 Amps
1/0 Gauge
Service Entrance
200 Amps
2/0 Gauge