If wire made of gold or platinum it could work. Copper or silver will oxidised on air shortly and contact will be compromised.
What say you binding posts or direct wire?
If I can get away with it I don't use BP. I find even the best like Mundorfs etc all sound inferior to direct wiring. Seems illogical to me to use costly cables hooked up to a binding post and then having just hook up wire after the posts. I get better-sounding results just by using quality speaker cable wired directly into my networks with the same cable type after to transducer.