DIYbanter - View Single Post - water well pump wiring

wrote:
I am completing a water well. The pump will be set down 180' in a 200'
well. The wiring will go via conduit in trench another 250' to the
structure that houses the controls. Is there any reason not to use one
unbroken stretch of submersible cable for this entire distance? Also,
is there any reason not to bring the wiring out underground near the
pitless adapter, with the conduit attached and sealed, watertight, to
the casing?

That's pretty much the way our well water line/electric was arranged.
We ran a trench about 200 feet down our road, then veered to the house,
and tied into the interior wall and pressure tank about 30" below grade
(about 280' total). We ran a flexible water line in 3" sch 40 PVC
conduit down the trench and ran the electrical line (outdoor 12-2, I
believe) in the same trench (no conduit) back upstream to the wellhead,
right down to the pump. We had to make one electrical splice since we
only had 200' of electrical cable at the size needed. We separated the
two lines into the house by about 6", the water line below the
electrical. Metal conduit was used immeditely on the interior of the
basement wall for the electric.

Seal carefully on the interior, as we foundout. Until the ground
settles, water can seep between the backfilled earth and get into the
sleeve run through the basement wall (if you have a basement).

Mike
http://home.earthlink.net/~mikefrand...useRelease.htm