If a lighting fixture is within the 20' range of a gasoline despencing area, mounted on a Bldg., as long as it's above 18" from grade level, am I OK to use the standard wiring methods? I was also wondering about an extention cord used in the area of Gas Tanks. Are there special cords for that use. If someone drills a hole through a building outside the range thats hazardous, but the extention cord is in the zone, what does a sparky with gas station experience think of that? The fixure would be surface mounted and fed from the back. Thanks