3 enclosure grounding, Figure 2-3; suggested grounding, pn-3 and pn-4, Enclosure grounding – Alpha Technologies PN-4 User Manual
Page 13: Pre-installation
13
031-103-B0-003 Rev. C
© 2002
TM
2. Pre-Installation
2.3
Enclosure Grounding
Lightning Protection (Optional)
1/2" x 8' copper ground rod, four places, driven about 2 feet (typical) from the corners of the pad.
#2 bare copper wire loop terminated to each ground rod and buried below grade 2 to 12 inches.
Corrosion-proof connections (25+ year life-span) and hardware suitable for direct burial MUST be used
#2 bare copper wire from loop to the enclosure
When the electrical supply is a primary service (not a secondary or feeder service) a #2 bare copper wire
must be bond the lightning protection loop to the Grounding Electrode Conductor where they are closest.
Service Grounding (required)
#6 bare copper wire from Service Neutral / Ground Bar with 2 ground rods located 6' apart.
3
2
1
4
5
Opening for
Sweeps
Opening for
Sweeps
Enclosure Footprint
2 f
eet
(mi
n)
8
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7
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1
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25
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8
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7
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25
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(48,9$/(17
TWO
(2) 8’
GROUND
RODS
PLACED
A
MINIMUM
OF
6’
APART
#2 AWG
#6 AWG
Opening for
Sweeps
1
4
5
2
3
Figure 2-3; Suggested Grounding, PN-3 and PN-4