The manager at my local co-op says rebar is not good because it rusts. Apparently it would affect the proper functioning of the fence.He advised that I get three 8 foot galvanized rods, put them in the ground at least six feet, ten feet apart and run a wire between them.
rebar and t posts both rust, but if you secure your ground wire to a sanded clean shiney part with a good tight hose clamp, and sink it sufficiently deep in the ground to where it makes contact with damp earth, it will work fine. Galvanizing also puts a coat on the metal like rust and it makes no more difference. I think your co-op manager had misplaced information or was trying to sell you a more expensive product.
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For short term, it would work. But long term, I'd use the real ones due to the rust issue. If you're going to bother hammering them in that deep, learn from my mistake so you don't have to repeat the process because a poor ground is keeping you from having a safe hot fence.
Had a fily that tried to jump out of a turnout...her back hock was impaled on the rebar. Not a pretty sight. IMHO I wouldn't use it.
Errm... I don't think the OP is talking about using it as a fence post... just as a ground rod. That's what we're using at our temporary facility (wife's parents' farm) until we close on the new place. Long term I'd go with the galvanized, but rebar does work just fine. Ours has been in for a year and haven't had any issues at all. I used 3 rods of about 8 feet long each spaced out about 8 feet apart... all pounded to just below ground level and covered with dirt. The wire just disappears into the ground, right beside a fence post. Someone would have to be very talented to injure themselves on our setup.
First, as noted, it rusts. That will reduce its conductivity and effectiveness as a grounding rod. Eventually it will disolve and that's that.
Second, it bends. It's supposed to bend so that it can be effectively used in reinforcing concrete. I've not had much success with rebar short posts for this reason. Driving an 8-10 foot piece (necessary in some places to get to continuously damp ground) will be a challenge.
Given that galvanized grounding rods are not all that expensive, are easy to work with, and reuseable I'd stick with them.
Thanks for the answers - it is working just fine!
I have copper rods for my permanent fence, but this is for temporary grazing paddocks and there is no way I would go 6 feet deep anyways... Seems to do the job.