For some reason I remember the explanation that "Greenfield" was a brand name of flexible conduit... As with "Kleins" (Lineman's Pliers) "Wire Nuts" (wire connectors) "Buchanons" (grounding crimps) "Penetrox" (Anti-Oxidant) "Kleenex" (tissue paper) "Vaseline" (petroleum jelly) etc.... You get the picture. Does anyone know any more particulars of the name?
