Toshiba G8000 operation manual Grounding Wire, Be sure to ground the UPS as specified

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 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 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	Feed-through opening

To facility

earth ground

Ground bus	10 mm or
	7/16” Bolt
	12 mm or 1/2”
	Terminal

2 AWG (38 mm)
ground wire	Feed-through opening

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