HI Wrenches:
My crew wants to nail all the flashings on our footings, but I am
resisting. Do you guys have any strong feelings about that.
Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell: 707-321-2937
Office: 707-789-9537
Fax: 707-769-9037
________________________________
From: Bob-O Schultze <bo...@electronconnection.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Tue, July 27, 2010 7:04:36 AM
Subject: Re: [RE-wrenches] AL wire with DC
Agreed with Dick on this one. First, if you are going the DB route, then you
have to get it down at least 24" instead of 18". No problem some places, a
HUGE
problem others. Then there are the burrowing critters like ground squirrels
which love to chew on anything. I have heard that there is something put into
the insulation which makes it distasteful, but I sure don't believe it- if true.
Bob-O
On Jul 27, 2010, at 4:06 AM, Richard L Ratico wrote:
The insulation on Al cable rated for direct burial is thick and tough. But,
DON'T direct bury it. Carefully pull it into correctly installed PVC conduit.
Use marker tape above the conduit, just below grade.
If you're in an area that doesn't experience ground frost, MAYBE, VERY
CAREFULLY, plant the cable in a generous amount of sand. If you're in an region
with frost, ALWAYS use conduit.
I think it is false economy to skip the conduit. The sand application is very
time consuming.
Buried copper wire with nicked insulation may not turn to dust, but is certainly
a MAJOR bummer, particularly if it's not in conduit, AND, it's at least 3X the
cost of Al. Al, done right, no worries.
Dick Ratico
Solarwind Electric
--- Drake wrote:
Aluminum wire got its bad name during the era when it was use in 15
and 20 amp circuits, with #12 and #10 wire. That stuff is a
nightmare. As an electrician that has cleaned up some of the messes,
I can supply ample horror stories.
#2 and larger sizes of AL work fine. It is important to use
antioxidant on the connections. Separate copper wire from aluminum
using a listed splicing device.
Aluminum wire will turn to white powder in an underground cable where
the insulation has been breached. This is true for DC or AC.
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