Alpha Technologies BD-8 - Manual (Page 14)

2. Pre-Installation
14 031-032-C2-002 Rev. B
Fig. 2-3 Enclosure Grounding
(The above drawing is for reference only, is not to scale, and may lack some details)
Service Grounding (required)
#6 bare copper wire from service entrance ground bar, with two ground rods 6' apart.
Lightning Protection (optional)
1/2" X 8' copper ground rods, four places.
#6 bare copper loop terminated at each ground rod, 30" below grade (min).
Corrosion-proof (25 yr. life-span) connections suitable for direct burial MUST be used.
#6 bare copper wire from loop to enclosure ground bar
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3
4
1
2.4 Enclosure Grounding
NOTE: Alpha Technologies recommends using the grounding method illustrated
below. The grounding method for a particular site will be dependant upon
soil type, available space, local codes, NEC (National Electric Code),
and other site- specific characteristics.
Alpha Technologies recommends 5 ohms minimum ground resistance between
enclosure and ground rods, in accordance with IEEE 1100-1999 Powering and
Grounding Electronic Equipment. NEC minimum grounding standard is 25 ohms.
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.
Burndy YGHP58C2W-2TN
or Equivalent Burndy YGHP58C2W-3
or Equivalent
Terminate at
Enclosure Ground Bar
Terminate at
Service Entrance Ground
Two 8' Ground Rods 6' Apart (min)
4
1
2
2' min.
#2 AWG
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2
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3