After fifeteen years of doing this, I have only counted the years, (So no stat's) but would say neutral drop out is more common than the one or two shorts I have seen clear on a gas line. However I have seen MANY shorts clear on water lines, as there are many more of them in any building. I guess it is that the gas be able to trip OCP, or MOCP rather than have it remain live, or worse cook off using the gas as an electrode. (However, the new high pressure lines here have a ground wire that PG&E bonds past the shut-off????)
My main gripe with it, is that it changed in '99 to "upstream from the shut off". (reflecting the same commentary in '93!) (We're on the '99, and probably will be until 2007, when we may or may not adopt 2005!)Making it simular to the change in '93 that moved the water to 5' from the entrance to the building. Making both a real pain... So in the '02 NEC it changes back. Why? Both '93 and '99 refferance National Fuel Gas Code, NFPA 54, (But doesn't in '02?)what is it that they are looking for, as it seems to me, that we are doing it for thier (the plumbers, etc.) benifit? Or ours, to clear OCP?
