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Figure 14 Making a grounding cable connector

Figure 15 Connecting the grounding cable to a grounding strip

(1) Grounding post

(3) Grounding cable

Grounding the switch with a grounding conductor buried in

the earth ground

If the installation site has no grounding strips, but earth ground is available, hammer a 0.5 m (1.64 ft)

or longer angle iron or steel tube into the earth ground to serve as a grounding conductor.

The dimensions of the angle iron must be at least 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in). The steel

tube must be zinc-coated and its wall thickness must be at least 3.5 mm (0.14 in).

Weld the yellow-green grounding cable to the angel iron or steel tube and treat the joint for corrosion

protection.

(A)

(B)

(2) Grounding strip

(4) Hex nut

(A)

(B)