TC cable [RE-wrenches]

[Bill Brooks]

Lee,

Nothing is inspector proof. Tray Cable (TC) is available in a format that
meets all the requirements of the code. The sheeth is rated for 90C wet
locations, and the conductors can be specified as THWN-2 (90C Wet
conductors). As Bob-O is keen to point out, there is no flexible conduit
currently on the market that is rated for greater than 60C wet. This is
because UL has dropped its 80C Wet testing for conduit apparently because no
one was asking to have it tested that way.

Siemens recommends the use of flexible conduit in their Earthsafe system, so
it sounds like they are the ones to step forward and work with a conduit
manufacturer and UL to get us higher rated conduit.

As I see it, the only truly code-compliant means of interconnecting modules
is USE-2 cable and Tray Cable with THWN-2 conductors. There may be something
else, but none more practical.

Bill.



-----Original Message-----
From: Lee Tavenner, Solar Plexus [mailto:solplex at montana.com]
Sent: Wednesday, November 07, 2001 3:43 PM
To: RE-wrenches at topica.com
Subject: TC cable [RE-wrenches]


TC cable for grid tie panels on roof interconnects and panels to
combiner box.  Is this code compliant, inspector proof, practical? Or is
it definitly a no,no? Reference?

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