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rdhetrick

Texas

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Posted: 02/22/21 12:51pm

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Hi all,

Trying to help my dad identify some wiring in his coach for a project. Manufacturer hasn't been any help so I thought I'd try here.

He has two wires that we are trying to identify the wire size. Seems the obvious method would be to use a set of calipers, but he doesn't have any.

Anyway, there are two stranded copper wires, each with different markings. Anyone recognize the markings or format?

Wire 1: "150 FA Ground"
Wire 2: "603c GLY LPS"

I've not been able to find anything.

Thanks in advance!

Rob
2006 Mandalay 40E Full Time
2015 Jeep Grand Cherokee

2oldman

south

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Posted: 02/22/21 12:54pm

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For wire 1, google says "For 150 amps in THWN wire size is 1/0"

I cannot find wire 2. Perhaps compare it to wire 1, assuming it actually is 1/0. You can consult a wire table for that.

I would think all you'd need is a simple ruler to measure the diameter.

* This post was edited 02/22/21 01:03pm by 2oldman *

opnspaces

San Diego Ca

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Posted: 02/22/21 01:33pm

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Are the markings printed on the wire as if from the wire manufacturer? Or is he talking about printed labels that were possibly installed by the coach manufacturer? I only ask because a 1/0 wire is a big wire which I find hard to believe is in a factory built RV.

2001 Suburban 4x4. 6.0L, 4.10 3/4 ton
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1986 Coleman Columbia Popup.

enblethen

Moses Lake, WA

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Posted: 02/22/21 02:16pm

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OP: Please post make and model of your dad's coach

Bud
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wa8yxm

Wherever I happen to park

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Posted: 02/22/21 04:14pm

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The wire markings idetify the wire's FUNCTION not the size but the purpose.

Beyond that I can not help.. For BIG I"m tlaking battery size big. a ruler might help
For smaller an adjustable wrench (The one that made crescent famous)

Then measure the gap in the jaws or take it (Tape over the adjuster) to the store with you.

NOTE if you are trying to add to or replace a 18 ga wire and all you have is 16 or 14. NO PROBLEM. the other way around PROBLEM You can always "Go big"

Home is where I park it.
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MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 02/22/21 04:41pm

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Lwiddis

Death Valley NP

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Posted: 02/22/21 05:51pm

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As said..always go bigger on any manufacturer’s wire size you are replacing.

Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watt solar-parallel & MPPT, Trojan T-125s. TALL flag pole. Prefer USFS, COE, BLM, NPS, TVA, state & county camps. Bicyclist! 14 year Army vet-11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad

rdhetrick

Texas

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Posted: 02/22/21 06:14pm

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OP here, to make a short story long...

Dad's coach is a 07 or 08 Fleetwood Bounder Diesel.

He recently had the 12v JC Refrigeration compressor unit installed and has had several problems with it. I've been helping him troubleshoot the problems.

The latest problem could possibly be a result of excessive voltage drop in the 12v supply to the JC unit. The JC unit is supplied with a connector that plugs directly into the 12v supply wires to the original Norcold unit after the Norcold is unplugged. They also state that the 12v supply wires should be minimum 10 gage. I have doubts that the original factory wiring to the Norcold was 10 gage, thus the question about the markings.