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Which type washer for best electrical connection?

 
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finn.lassen(at)verizon.ne
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PostPosted: Sat Apr 20, 2024 3:06 pm    Post subject: Which type washer for best electrical connection? Reply with quote
I'm redoing the engine controller installation in my RV-4 to ensure
better ground paths for noise reduction.

Moving from (cheaper and lightweight plastic box) to cast alum box. 5 oz
increase, ouch!

I had been using star washers under screw heads and between PCB (ground)
and spacers and to air frame.

Now I'm wondering what is the best choice of washer. Perhaps
ribbed/serrated is better -- won't damage PCB ground traces and better
contact?

I think this picture best shows the ones I have:

https://www.jugenheimersupplies.com/ecomm_images/items/large/ribbedwasher.jpg

The other question is whether I should put washers between bottom of box
and the RV-4 side skin it's being mounted to.

I  know I being  anal here but figure might as well do everything I can
can to get good paths.

Finn

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