Alpha Technologies PWE-6FT - Manual (Page 23)

23 031-259-B0-001, Rev A
2.0 Installation, continued
2.4 Enclosure Grounding, continued
2.4.2 Enclosure Grounding for Pedestal-mount Configurations
Alpha Technologies recommends using the grounding method illustrated below. The grounding method for a
particular site will be dependent upon soil type, available space, local codes, NEC (National Electric Code), and
other site-specific characteristics.
Alpha Technologies recommends 5 ohms maximum ground resistance between enclosure and ground rods, in
accordance with IEEE 1100-1999 Powering and Grounding Electronic Equipment.
Alpha Technologies assumes no responsibility or liability for failure of the installer to comply with the requirements
of all applicable local and national codes. Where allowed, exothermic welding may be used as an alternative to
Burndy clamps and connectors.
Service Grounding (required)
1 #6 bare copper wire from Service Neutral/Ground Bar with 2 ground rods located 6' apart.
Lightning Protection (optional)
2 1/2" x 8' copper ground rod, four places, driven about 2 feet (typical) from the corners of the pad.
3 #6 bare copper wire loop terminated to each ground rod and buried below grade 30 inches min.
Corrosion-proof connections (25+ year life-span) and hardware suitable for direct burial MUST be
used.
4 #6 bare copper wire from loop to the enclosure.
Fig. 2-7, Enclosure Grounding for Pedestal-mount Configurations
Enclosure Footprint
2
fe
et
(m
in
)
#2 AWG
#6 AWG
Connection made with Burndy connector
(P/N YGHR58C2W-3 or equivalent)
Connection made with Burndy connector
(P/N YGHP58C2W-2TN or equivalent)
Two (2) 8' ground rods 6' apart minimum.
Note: May require additional ground rods to meet
NEC minimum grounding standard (25 Ohms or
less).
Terminate at enclosure ground
Terminate at service
entrance ground
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2
3
4