Quote:
Originally Posted by WrenZ71
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Thanks for the reference.
Safe Work Practices
• Never attach a portable generator directly
to the electrical system of a structure
(home, office or
trailer) unless the generator
has a
properly installed open-transition
transfer switch.
(Just not plugging your RV into the pedestal works too, but remember to do that.)
Grounding Requirements for Portable
and Vehicle-mounted Generators
Under the following conditions, OSHA
directs (29 CFR 1926.404(f)(3)(i)) that the
frame of a portable generator need not be
grounded (connected to earth) and that the
frame may serve as the ground (in place of
the earth):
• The generator supplies only equipment
mounted on the generator
and/or cord and
plug-connected equipment through
receptacles mounted on the generator,
§ 1926.404(f)(3)(i)(A),
and
• The noncurrent-carrying metal parts of
equipment (such as the fuel tank, the internal
combustion engine, and the generator’s
housing) are bonded to the generator
frame, and the equipment grounding conductor
terminals (of the power receptacles
that are a part of [mounted on] the generator)
are bonded to the generator frame,
§ 1926.404(f)(3)(i)(B).
Thus, rather than connect to a grounding
electrode system, such as a driven ground
rod, the generator’s frame replaces the
grounding electrode.
If these conditions do not exist, then a
grounding electrode, such as a ground rod,
is required.
If the portable generator is providing electric
power to a structure by connection via a
transfer switch to a structure (home, office,
shop, trailer, or similar) it must be connected
to a grounding electrode system, such as a
driven ground rod. The transfer switch must
be approved for the use and installed in
accordance with the manufacturer’s installation
instructions by a qualified electrician.
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It reads to me that the first quoted section knocks RV's out for using a cheater plug, not to mention some of the further grounding requirements.
They do mention to use GFI's in the document too.
Be careful with portable generators. The electricity they supply can kill people just as dead as the voltage from a power grid.
vic