Re: Have you seen this block?
Keeping the overall potential to zero and chrome/nickel plating eliminates all risks. Chrome/Nickel can withstand extra ordinary conditions for years. Example would be:
A car's header (exhaust manifold, Nickel plated can withstand >100 C)
Bumper Chrome can withstand exhaust emissions, rain, snow, sun heat etc
Advanced methods include anodizing the metal. Example:
Military tactical equipment is anodized to withstand harsh conditions. Usually Al is anodized to a state that it changes its color to green (forms a protective layer).
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