the 97 UPC, plumbing code, 510.1 says to put ignition sources 18" or more above the floor and includes pilots, burners, and switches.
the 98 IMC, mechanical code, 304.2 says the same thing.
the NEC 210-52(g) on garages doesn't address this issue of vapors in a garage... when i wired in Oregon, it used to be a requirement by an NEC amendment. guess thats where i heard it.
