Alpha Technologies AlphaGen PN-6x-T 7.5kW 48VDC - Technical Manual - Manual (Page 29)

042-288-B0-001, Rev. A 29
2.0 Site Preparation, continued
2.7 Grounding Requirements, PN-6xT 7.5kW
The ground rod system is typically used in remote applications where the generator is located
away from the power supply enclosure and exposed to lightning strikes, or coincidental
surges. The wiring interface between the DC Genset and system carries a system ground to
ensure common ground between both cabinets and communication devices. The remote APU
cabinet ground rod serves only as an alternate discharge path.
• 8 feet long, 1/2 inch diameter copper electrode.
• To aid in serviceability, place the ground electrode outside the concrete pad’s perimeter. Consult
local utility codes for additional cabinet grounding and utility requirements.
Fig. 2-12, Enclosure Grounding, PN-6x-T 7.5kW
A
B
Conduit
AC In
DC Out
Ground
Front of Enclosure
A
B
• #6AWG bare copper wire exposed 5 feet above grade (min.) for output ground bus bar.
• Clamp #6AWG bare copper wire exposed 5 feet above grade (min.) for output ground bus bar.