 Engine Compartment Wire Type |
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| AvalonFal |
  Aug 23 2014, 08:37 AM
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Member  Group: Members Posts: 483 Joined: 3-July 05 From: Southern New Jersey Coast Member No.: 4,367 Region Association: MidAtlantic Region  |
Do I need the better heat resistant insulation GXL (TXL, etc.) type wire for use in the engine bay for the 2 sets of 4 & 2.5 mm wires to the (+) battery, or will plain proper gauge auto primary wire be OK??
Paul |
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| Mike Bellis |
Aug 23 2014, 08:54 AM
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#2
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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THHN is a standard electrical wire rated at 90°C (194°F) You can get it at home depot. You can also get more expensive wire rated higher.
With any wire, you should route it away from heat. |
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| Tom |
Aug 23 2014, 12:30 PM
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#3
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
GXL and TXL are rated at 247 degrees F. and meet or exceed SAE specifications J1128. Ford ESB-MiL85B, and Chrysler MS-8900. I spent days searching for what these specs say, but unless you are a member of SAE ( society of auto engineers), you can't find them.
Those 4 wires you are talking about, 2 -(5.0mm) go to the fuse panel/key switch under the dash area. the two 4.0 mm go to the relay panel. German wires are high multi-stranded wires, the 4.0 has something like 40, the 5.0 more like 56. They have much better current carrying capability than standard gage wires. Accordingly, bump up your replacement size. I would use 12 or 10gage for the 4.0 and 8 gage for the 5.0. Del City has these at a reasonable price. Tom |
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