Bennett Price wrote:

A $35 tool like the following will do the trick
http://tinyurl.com/agr9z



Bennett,

That works well if you can already see the wire, i.e. you can touch the
wire with the device. It is great for picking a hot wire out of a
bundle of dead ones. It won't work well for a wire buried 6 to 12
inches deep in dirt.

Matt,
I have a tool that will sense a wire a couple of feet deep, but it cost
about $220. Call an electrician. If you destroy the wire in the
process of finding it, you aren't saving any money!

Stretch