Grounding Wire - Toshiba G8000 SERIES Installation And Operation Manual

11.3

Grounding Wire

The 100/150 kVA earth grounding bus is located inside, at the bottom-front of the unit. The 150 kVA earth
grounding buss is accessable through either the bottom or top knockout panel.
Use a 2 AwG (or 38 mm
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
Ground bus
2 AwG (38 mm2)
ground wire
To facility
earth ground
G8000 Series with Isolated output Installation and operation manual
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.
) or larger cable for the grounding wire. run the grounding wire through the
2
10 mm or
7/16" Bolt
12 mm or 1/2"
Terminal
Feed-through opening
FIGURE 11.7 - EARTH GROUND WIRE
150 kVA
Facility earth ground.
Alternate ground wire routing
through top knockout plate.
Ground bus
2 AwG (38 mm)
ground wire
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.
10 mm or
7/16" Bolt
12 mm or 1/2"
Terminal
Feed-through opening
To facility
earth ground
33