11.3Grounding Wire
WARNING
Be sure to ground the UPS as specified.
Using the UPS without a proper ground will deteriorate the insulation, cause leakage of currents and electric shock.The resistance to ground should be less than or equal to 10 ohms.
The 100/150 kVA earth grounding bus is located inside, at the
Use a 2 AWG (or 38 mm2) or larger cable for the grounding wire. Run the grounding wire through the opening at the bottom, or alternately through the top if a 150 kVA unit.
The ground wire must have a crimp terminal with a 1/2” (12 mm) diameter bolt hole. The ground bus has a 33/64” (13 mm) bolt hole. The crimp terminal and ground bus should be connected together using a 7/16” (10 mm) diameter bolt.
100 kVA | 150 kVA |
Facility earth ground. Alternate ground wire routing through top knockout plate.
Ground bus | 10 mm or |
| 7/16” Bolt |
| 12 mm or 1/2” |
| Terminal |
2 AWG (38 mm2) |
|
ground wire |
To facility
earth ground
Ground bus | 10 mm or |
| 7/16” Bolt |
| 12 mm or 1/2” |
| Terminal |
2 AWG (38 mm) |
|
ground wire |
To facility
earth ground
Note: Use either the top or the bottom access for the ground wire to connect to the ground buss, but use only one ground wire.
Figure 11.7 - EARTH GROUND WIre
G8000 Series with Isolated Output Installation and Operation Manual | 33 |
