On Mon, 11 Jan 2010 04:16:37 -0600, Lostgallifreyan
wrote:

Would sacrificial action be appliable? Magnesium blocks are sometimes used to
prevent chemical action taking place on less reactive metals electrically
connected to them. I'm not sure if it can be applied though, that trick is
usually done with grounded (usually buried) blocks to protect pipelines, etc.

Well, I doubt if this could be put to use for Tom. Some of the
sacraficial methods actually use a reverse bias to combat not only the
anodic reaction, but currents that occur naturally or flow between
service grounds.

73's
Richard Clark, KB7QHC