alt.energy.homepower

Check wire charts. dependant on the insulation type and style to
determine capacity (ampacity).

One tip: After you glue all your pipe together...put a damn pull
string in it righ away!. It will be full of grit and water and you may
not get it in later. With a string you can pull a better one in, a rag
through it etc..



"Mike Ruskai" wrote in message
news:dpaoe359vglvhq7omqd4g195bc4uhsea5u@ ...
> I'm putting together a plan to run power to a new shed, and want to
> do
> it properly.
>
> Starting backwards, I have a 125A subpanel for the shed, in which
> I'll
> put two 20A circuits for outlets (with one possibly going outside),
> and one 15A circuit for lights.
>
> The part of the shed where I'd bring the power in is about 70 feet
> from the part of the house where power would go out. There's one
> slight turn in that path, to avoid the driveway. From there, it's
> another 55 feet to the main panel inside the house.
>
> My plan is to run one length of 6/3 from a 40A or 50A double breaker
> at the main panel to the subpanel, using buried PVC conduit for the
> outside portion.
>
> I've hunted up enough information to do all this mostly comfortably,
> but I'd like a bit of confirmation on some questions:
>
> 1) Is 6 gauge wire sufficient for 40A over about 125 feet, a bit
> more
> than half of which is in buried conduit? What about 50A?
>
> 2) How wide should the conduit be? This is the only wire that will
> be inside, so beyond fitting the wire, the only concern is heat
> dissipation.
>
> 3) How deep should the conduit be buried?
>
> Thanks in advance for any answers.