Splicing AWG20 wires to make them longer

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  #1  
Old 03-02-16, 05:07 PM
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Splicing AWG20 wires to make them longer

I bought those LED puck lights from HD that use a small step down transformer and each light is 0.6A and DC3.2V....There are 3 of those LED lights that plug into the transformer via AWG20 that is just about 12 inch long.The transformer plugs into regular outlet.
What I need to do is to extend one of the pucks.... Would it be OK to simply cut the wire and extend it using AWG20 Aluminium even though the original wire is Cu ?

I know you can't mix metals in regular application....but I am thinking this is just low Amps / low Voltage and only extra 4 inches on top of the current 12 inch run.

thanks!
 
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Old 03-02-16, 05:10 PM
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Aluminum AWG20.... are you sure ? It sounds more like you have silver plated copper.
 
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Old 03-02-16, 06:46 PM
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well... It does look Silver...but didn't think they actually use silver in such wires.....
 
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Old 03-02-16, 06:52 PM
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Silver plating or zinc plating. If the wire is stranded...... it's not aluminum..... it's copper.
 
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Old 03-02-16, 08:44 PM
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There actually is 20 AWG aluminum wire, but usually only available as copper clad aluminum (CCA). Often sold as part of car audio installation kit and falsely advertised as copper wire.
I also have seen them used for pig tail off cheap automotive relay socket on eBay.
Worst place for CCA in my experience was in CAT5e UTP. Too high of resistance and very fragile.

But if it looks silver probably zinc plated. Silver plated wire will be expensive. It is often used as audio cable, but doesn't really do any good at improving sound quality.
 
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Old 03-04-16, 01:07 PM
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so after all....is it OK to splice two different types of stranded wires?
 
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Old 03-04-16, 02:33 PM
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so after all....is it OK to splice two different types of stranded wires?
Copper to copper, zinc plated copper, or silver plated copper. Yes.

Copper to aluminum or copper clad aluminum. No.
 
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