RE: Split loom melting

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Subject:		RE: Split loom melting
From:		Robert L. Nuckolls, III (nuckolls.bob@cox.net)
Date:		Sun Oct 05 - 3:56 PM

At 03:16 PM 10/5/2008 -0500, you wrote:
>
>Bob,
>
>Am I drawing the correct conclusion from your comments that using split loom
>or most any "conduit" is NOT a preferred method of "protecting" a wire
>bundle in the engine compartment?

    Don't know how to define "preferred". If you look under
    the cowl of a TC aircraft,

http://aeroelectric.com/Pictures/Wiring_Technique/A36_Firewall_B.jpg

http://aeroelectric.com/Pictures/Wiring_Technique/A36_Firewall_A.jpg


    You can see that the designers use the UV/ozone resistant Tie-Straps
    and MS21919 clamps. No other protection is considered necessary.


>I must admit that in my planning and building I have "assumed" conduit was
>desirable from an appearance standpoint while not considering the
>temperature the wires would be exposed to.

    Tefzel wire is good to 150C . . . I'd take the low
    temperature plastic stuff clear out of the engine
    compartment. Then keep and eye on the bundle adjacent
    to the observed damage . . . just to be sure you're
    not bumping the Tefzel limits.

    Bob . . .