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To: IceShark who wrote (102150)	5/14/2001 9:10:03 PM
From: yard_man	Read Replies (1) \| Respond to of 436258

steel is a good conductor (not as good as Cu, but still pretty good). You are correct resistance goes down with the increase in the cross-sectional area -- 1/A. Resistance increases with temp but not necessary to consider when you are talking about using a car frame as a ground for a automotive circuit -- is that what you are talking about? the point of contact is probably more important than the resistance of the frame -- depending on what you are doing -- and you have to be careful in putting 2 different metals (e.g. Cu & steel) together if you don't want to wind up with corrosion what are you doing?