REFLECTOR: Wiring in ducts

[Nate Jackson]

Wiring in ductsKeith,

I haven't needed it yet, but I laid various gages of extra wire down the co-pilot side.  It's coiled up behind carpet in the front and behind the aft bullheads.  Yes... a little extra weight.

Nate
RG Elite/IVO
  ----- Original Message ----- 
  From: Keith Hallsten<mailto:KeithHallsten at quiknet.com> 
  To: Velocity Aircraft Owners and Builders list<mailto:reflector at tvbf.org> 
  Sent: Sunday, July 02, 2006 7:49 PM
  Subject: REFLECTOR: Wiring in ducts


  I'm about to start pulling wire, and wanted to ask whether anyone has run engine instrumentation wiring in the same duct as the big #2 alternator feed/starter/engine ground wires.  I know that it's considered good practice to separate the fat conductors from the little wires, in order to keep the noisy big currents, alternator whine and associated magnetic fields away from the signal wires.  


  However, I'm not enthusiastic about running either type of wires through the pilot's-side duct with the oil cooler lines.  I'm afraid that long term exposure to the high temperatures will tend to cook the insulation.  I'm going to be running a lot of thermocouple wires, pressure and temperature signal wires, capacitive fuel gauge lines, and tach pulse lead up to the Grand Rapids EIS 6000 engine monitor in the panel.  I don't know if the potential electrical noise or the heat of the oil cooler lines will be the bigger threat to their function and life.  So I'm undecided which is likely to be the better scheme.  What say you?


  Keith Hallsten

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