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4.2 The grounding of the protection unit
Electric Shock
(1) It will result in electric shock even death if connected with the output terminals.
■
Cut off the breaker circuit of the control box and stop the engine before connecting the load.
■
Close the output terminal cover and tighten the forcing screw when running the generator.
(2) Don't use the broken cable. Otherwise it will cause a shock accident. If the forcing screw isn't
tightened, the connected part will become hot and may cause fire hazard.
4.3 Grounding method
(1) The grounding of the generator
The grounding terminal of the outer box should be connected in this
way.
The section of the grounding cable should accord with the generator
capacity specified in the technical standard for the electric appliance.
Please use the grounding rod of whose resistance meets the electrical
standard.
If it classes to D grounding (No.3 grounding), ground it when resistance
is below 100
Ω
.(When the voltage is over 300V, please use C class grounding, and the grounding
resistance is below 10
Ω
).
(2) The grounding of the load appliance
Don't neglect the grounding of the load appliance, even if generator is equipped with
electrical-leakage protector.
The outer box of the load appliance should be grounded, as well as the generator. The section of
grounding cable depends on the relative electrical standard and the capacity of the load. Please
prepare the grounding rod for following resistance.
The grounding of the load appliance should be D class (No.3 grounding), and its resistance
should be below 500
Ω
.
Case grounding
Grounding cable
Load grounding terminal
