Re: Power for electric embedder (home made)
18 volts is not likely to shock you. 24 volt transformers are often used for underground lawn sprinkler valves, and I think that use that is pretty safe. I would keep my hands dry, though.
Typically, the secondary (low voltage) side of a transformer is not grounded, essentially it is an isolated circuit. In such a transformer, the current needs to go back to the other pole of the transformer to complete the circuit, and not to ground. However, current from the primary (high voltage) side of the transformer will be happy to go through you to ground.
The wire you are embedding may heat up faster than it would at 12 volts, though. Personally, I would use the transformer you already have. I also have no problem drinking tap water, but some people will tell you that is hazardous to your health ...
Last edited by Rader Sidetrack; 02-26-2013 at 06:51 PM.
-- Victor Hugo -- "Common sense is in spite of, not the result of, education.”