2-26
Figure2-25 Attaching the grounding cable to the grounding hole of the switch
(1) Grounding screw
(2) Ring terminal
(3) Grounding sign
(4) Grounding hole
(5) Grounding cable
2.
Connect the other end of the grounding cable to the grounding strip.
a.
Cut the grounding cable to a length according to the distance between the switch and the
grounding strip.
b.
Peel 20 mm (0.79 in) of insulation sheath by using a wire stripper.
c.
Use the needle-nose pliers to bend the bare wire.
d.
Hook the grounding cable to the post on the grounding strip, and use the hex nut to secure
the cable to the post.
Figure2-26 Connecting the grounding cable to a grounding strip
(1) Grounding post
(2) Grounding strip
(3) Grounding cable
(4) Hex nut
Grounding the switch with a grounding conductor buried in
the earth ground
If the installation site does not have grounding strips, but earth ground is available, hammer a 2.5 m
(8.20 ft) or longer angle iron or steel tube into the earth ground to act as a grounding conductor. Make
sure a minimum of 0.7 m (2.30 ft) is left between the top of the grounding conductor and the ground.
In cold areas, bury the grounding conductor below the frozen soil layer. In areas with thin soil or rocky
gravel, determine the depth for burying the grounding conductor based on the actual condition.
