Originally Posted by juice5
All RV's come with "pre-rusted galvanized steel primary gas line that swtches to copper as it rises to service areas in kitchen...spray entire galvanized pipe with rubber sealant after wire brushing the rust or do rustoleum ! You must find a safer way to secure your wiring than attaching to a gas line....Road vibration leads to insulation loss...then the posibility of electrical galvanic action compromising gas pipe integrity and leaving the options for fire and explosion! Eddy currents and trancient currents in buildngs can do the same thing which is the reason article 250 requires all interior piping to be grounded and bonded together . Grounding and bonding insures overcurrent protection works by conducting fault current to the level of overcurrent interruption rating.
Just to add some ideas:
The prerusted gal pipe is actually black iron pipe. Steel, schedule 40. The black coating is actually mill scale from mfg.very hard enduring surface and will outlive any RV built. It's shortcoming is very susceptible to corrosion in salt water or atmospheres w/ salt.
As to NEC rules here's a quip from a rules blog:
Authorís Comment: The grounding rules covered in this book are in reference to solidly grounded alternating current systems, such as 60/120, 120, 120/240, 208Y/120, 480Y/277 V. Other system configurations, such as 3-wire corner-grounded delta system, ungrounded system, or high resistance grounding system arrre permitted by the*National Electrical Code, but they are rarely installed, except in industrial applications.
Low voltage wiring not included, RV'S great majority is LV wiring.