Grounding The Switch With A Grounding Conductor Buried In The Earth Ground - NEC QX-S5500G Series Installation Manual

Installation Guide
QX-S5500G Series Ethernet Switches
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(1) Grounding post
(3) Grounding cable
3.4.3 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 a minimum of 50 × 50 × 5 mm (1.97 × 1.97 × 0.20
in). The steel tube must be zinc-coated and its wall thickness must be a minimum of 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.
Figure 3-12 Connecting the grounding cable to a grounding strip
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3
3-10
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(2) Grounding strip
(4) Hex nut
3. Installing the switch