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 > Electrical Wire Identification

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rdhetrick

Texas

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Posted: 02/22/21 12:51pm Link  |  Quote  |  Print  |  Notify Moderator

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

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Posted: 02/22/21 12:54pm Link  |  Quote  |  Print  |  Notify Moderator

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

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Posted: 02/22/21 01:33pm Link  |  Quote  |  Print  |  Notify Moderator

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.


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enblethen

Moses Lake, WA

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Posted: 02/22/21 02:16pm Link  |  Quote  |  Print  |  Notify Moderator

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


Bud
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wa8yxm

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Posted: 02/22/21 04:14pm Link  |  Quote  |  Print  |  Notify Moderator

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"


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MEXICOWANDERER

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Posted: 02/22/21 04:41pm Link  |  Quote  |  Print  |  Notify Moderator

Image next to a fingernail?

Lwiddis

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Posted: 02/22/21 05:51pm Link  |  Quote  |  Print  |  Notify Moderator

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


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rdhetrick

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Posted: 02/22/21 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

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.

enblethen

Moses Lake, WA

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Posted: 02/22/21 06:38pm Link  |  Quote  |  Print  |  Notify Moderator

I checked my wiring diagrams for my rig. They use a different coding.
Factory refer is more likely around 16 gauge.

Bobbo

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Posted: 02/22/21 06:54pm Link  |  Quote  |  Print  |  Notify Moderator

wa8yxm wrote:

For smaller an adjustable wrench (The one that made crescent famous)

I always thought the rolls made crescent famous.


Bobbo and Lin
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