Copper Clad Aluminum wire on an auxiliary battery installation

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

opfor2

Full Access Member
Joined
Mar 29, 2023
Posts
431
Reaction score
375
Location
Riverside County, CA
I'm getting ready to install an auxiliary battery set up on my 2011 SSV, and I'm wondering if I should be concerned about using Copper Clad Aluminum (CCA) primary automotive wire verses pure cooper?

 

mikez71

Full Access Member
Joined
Mar 9, 2023
Posts
3,354
Reaction score
4,157
I don't trust it.. but I don't know anything about it.

For smaller wires, I ordered some sxl wires from ebay. You get enough length with a selection of colors.
The insulation is less soft and can take higher heat. Probably didn't need it, but it feels better :)

Battery cables, sounds like SGX > SGT..
 
Last edited:

SnowDrifter

Full Access Member
Joined
Sep 5, 2016
Posts
2,492
Reaction score
2,941
Location
Sasquatch Country
Nope don't touch it

Stuff isn't suited for under hood use. Copper + aluminum react via galvanic corrosion. You also can't solder it, which means you need a crimper. And, politely, a bench vice doesn't count!

Use marine grade wire - tinned copper. It'll hold up to the chemical/moisture exposure

 

Joseph Garcia

Elite Member
Supporting Member
Joined
Aug 2, 2018
Posts
10,541
Reaction score
15,299
IMO, you should use solid copper wire instead. It has a much lower internal electrical resistance and is subject to less corrosion.
 

Scrappycrow

Full Access Member
Air Force
Joined
Dec 22, 2023
Posts
453
Reaction score
715
Location
Alpharetta, Georgia
I would only use copper. Size the wire for the length & amperage, then consider the wire and the connectors as a system. I prefer using solder terminals that utilize solder pellets, then sealing the joint with heavy-duty adhesive-lined shrink tubing.

Some sources besides those mentioned above:


 

strutaeng

Full Access Member
Joined
Aug 10, 2023
Posts
1,992
Reaction score
4,291
Location
Dallas, Texas
I didn't know they had that for battery cables. I have used that copper clad for speaker wires before (in-wall).

And aluminum wire is still used in main feeders and stuff like that on buildings, just not individual branches like they used in the old days. My main panel to detached garage subpanel is aluminum, which is like a 80 A or something) that's used for welders, air compressors and tools.

You can always buy the next size up to keep the wire from getting loaded as much.
 
Last edited:

j91z28d1

Full Access Member
Joined
Feb 28, 2022
Posts
4,661
Reaction score
5,914
whatever wire you use, please don't solder battery terminals. crimp and if you must, solder after crimp.
 

petethepug

Michael
Joined
May 4, 2016
Posts
3,790
Reaction score
4,359
Location
SoCal
Good question. Good info. Aluminum was supposed to be the fix for rising copper prices. Aluminum contracts & expands from thermal loads. That loosens the connectors made of dissimilar metals. Loose connectors means arcing. Arcing started fires.

Aluminum is ok for power as long as it’s up to code and using connectors that are rated not to interact. I can’t figure why they’d make CCA for automotive use when it’s in play, live, literally moving and susceptible to damage as any vehicle is.
 

waveryd

Full Access Member
Joined
Jan 25, 2023
Posts
101
Reaction score
166
Location
IL
I'm getting ready to install an auxiliary battery set up on my 2011 SSV, and I'm wondering if I should be concerned about using Copper Clad Aluminum (CCA) primary automotive wire verses pure cooper?

Yes, you should.
 

waveryd

Full Access Member
Joined
Jan 25, 2023
Posts
101
Reaction score
166
Location
IL
I use batterycablesusa.com a lot. They are reasonable with high quality USA made wire and fast shipping. You can design any cable with any ends on their site. Excellent crimps with good heat shrink tubing.
 

ZKWBQD

Full Access Member
Joined
Sep 29, 2022
Posts
306
Reaction score
252
I'm getting ready to install an auxiliary battery set up on my 2011 SSV, and I'm wondering if I should be concerned about using Copper Clad Aluminum (CCA) primary automotive wire verses pure cooper?

If you have a choice, I would definitely go with pure copper.
 

73Vetteman

Member
Joined
May 30, 2015
Posts
59
Reaction score
42
I use copper welding cable. Flexible, available by the foot, and easy to alder crimped connectors.
 

j91z28d1

Full Access Member
Joined
Feb 28, 2022
Posts
4,661
Reaction score
5,914
I use batterycablesusa.com a lot. They are reasonable with high quality USA made wire and fast shipping. You can design any cable with any ends on their site. Excellent crimps with good heat shrink tubing.


wait. will they make cable to your spec. crimp whatever ends you want, heat shrink and send them to you?


if so that's brilliant for the guys that don't do wiring stuff and just need a few replacement ground cables here and there. maybe a upgraded alt wire with a different terminal than stock.
 

Forum statistics

Threads
138,087
Posts
1,998,586
Members
103,013
Latest member
GS Audio

Latest posts

Back
Top