Re: Wire thickness

Quote
UkIan
Of course you could be really cunning and use a large gauge wire, but make it hollow so it doesn't weigh much ;)

While getting off topic, for DC I believe it still ultimately comes down to the effective cross sectional area. DC utilizes the entire conductor for carrying current. Now if you were talking about a high frequency AC application, then using a hollow tube would save you money and weight as the skin effect results in almost all of the current to be carried around the surface of the conductor. The only thing using a hollow metal tube for DC would be adding stiffness and expense.