"Bryan Martin" wrote in message
...
Ok need to run electrical wiring underground to 2 outbuildings located on
different sides of my lot.

Building A
Needs 4 wall outlets, 2 light fixtures and a light switch. Everything
should be 110V in this building
Just mainly need power for lights but may use other devices once in a
while.

Building B
Needs 5 wall outlets, 2 light fixtures and a light switch. Needs 1 outlet
220V for air compressor.
Needs the 220 for a air compressor, will run power tools (skill saw, misc
drills etc....)

Now the way I understand it sounds like I can run a single wire into a
junction box inside building B. Is that the case? What size wire will I
need for this? For both buildings will I need to place the wire in
conduit all the way from the house into the building underground? If so
what kind of conduit? Do I need each building on seprate breakers? What
breaker(s) size do I need? Do I need 12-2 wire or 14-2 for each of the
buildings?

I think I am looking for the outdoor wire located
http://www.lowes.com/lowes/lkn?actio...0Wire&pad=true

--
Poor planning on your part does not constitute an emergency on my part.




Now the way I understand it sounds like I can run a single wire into a
junction box inside building B. Is that the case?

You run both phases to a sub panel in bldg 2 then bring off your 220V and
110V branch circuits from that panel using new breakers.

What size wire will I need for this?

Probably 6 gague 3 conductor plus ground jacketed UF if not using a conduit.
Seperate pieces of 6 gague if inside a conduit (#12 bare for ground cond).
It ultimately depends on the current but #6 is good for at least 60A (table
not with me now).


For both buildings will I need to place the wire in conduit all the way
from the house into the building underground? If so what kind of conduit?

You can use UF cable or metallic conduit or NM (non metallic conduit) your
choice. NM is a good compromise because the glued connections are
watertight and easy to make.


Do I need each building on seprate breakers?
Yes since each bldg has such different requirements, Bldg A only needs one
20A branch and could be taken off the subpanel in Bldg B if you wanted.


What breaker(s)
size do I need? Do I need 12-2 wire or 14-2 for each of the buildings?

Forget 14-2 its only good for 15A which is only good for lighting. #12-2 is
good for 20A and is better suited to a workshop especially if you might use
a small space heater.

Buy a copy of code check electrical, it has the answers you need. Wiring a
House by Peter Hemp is also an excellent book.