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Panel grounding clips/lugs

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Hi all,

I need to ground my solar panels but can't seem to find many options for ground lugs/clips in SA. The only thing I find is a ground clip that seems pretty straight forward to install e.g. - https://battery24.co.za/shop/solar/araymond-edge-clip-screwless-idc-earth-connector/

At first I thought I could just use any old nut and bolt but apparently aluminium and copper don't get on that great and corrosion will occur.

A few questions spring to mind when looking at this clip -

Is this the only option available?

Is it corrosion resistant?  

Can I use bare copper wire or must I use a jacketed wire for earth?

Thanks!

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