I planning on adding a subpanel to my shed. I think I have done my homework and here is what I was planning. I was going to add double pole (40AMP 240 volt breaker) to my main panel. It is about an 80 foot run between my main panel and the subpanel I am adding. I already have schedule 80 PVC buried and I was planning on running THHN 8 gauge wire (4 wires, 2 hots, neutral, and a ground) between my main panel and my subpanel. On the subpanel (70A Homelite) I was planning on adding 2 x 20 AMP circuits and 1 x 15 AMP circuit. One of the 20 amp circuits would be for inside receptacles the other would be for outside receptacles. I was going to protect each of these circuits using a GFCI (first) outlet. The 15 amp circuit would be for lights (indoor and outdoor). I am going to use 12 gauge NOMEX NMB for inside outlets and 14 gauge ROMEX NMB for lighting. For outside receptacles I was going to use UF, USE, or URD and bury wire directly (I do not have PVC buried for this circuit yet). I was going to use 6 gauge bare copper wire between grounding bar in box and the 1/2" x 8' grounding bar. Even though there would be a potential for 55 AMPs to leave the subpanel, it will likely never exceed 20 or 30 AMPS.

I have the following questions:

1) with this plan would I be getting 120 volt 40 amp on each of the hot wires running between the main and sub or would it be 120 volt 20 amp on each of the hot wires?

2) I was going to buy supplies at home depot, is THHN best option for run between main and subpanel?

3) PVC broke near surface after it was installed. I have fixed this but there is some water inside. I have blown most of it out with a shop vac, but it remains damp inside. What can/should be done?

4) PVC currently has a 90 degree turn (second) and then comes out of ground about 3 feet from shed (in lawn). What would be best way to get PVC against shed? Top of 90 is near surface so I couldn't just add another 90 turn. Pull box would be ideal but I understand they can't be buried and would prefer not to leave it on surface.

5) Can bare wire ground be left exposed between box and grounding rod or can/should it be protected by PVC?

6) Is ROMEX NMB appropriate for inside shed? It is 20 x 10 new construction (very dry inside). If it is run inside studs I assume it would not need to be run inside PVC? Is Romex appropriate or would I need to use some type of wire that is rated for outdoor use? If so, what would you recommend?

Thanks,

Scott