Ground Bus - Toshiba V Series User Manual

Chapter 2 Mounting, Dismounting and Connection
2.8.3

Ground bus

2
80
The ground bus is described below.
Supplementary Note
2
Use a ground bus 8 mm (AWG#8) or larger.
Never connect any devices other than the components of this system to the ground bus.
For grounding in using an Ethernet unit, read carefully "Integrated Controller V series, Ethernet
Installation and Wiring Manual".
Connecting two or more model 1000's within a room to the
ground bus
To connect two or more model 1000's within a room to a ground bus, attach lead-in
terminals to the ground bus, or use bolt connectors as shown in Figure 2-9. Do not
connect one ground bus sequentially. Be careful so that the grounding conductor does
not form a loop.
Use a grounding wire 1.25 mm
model 1000 to the common bus.
Cabinet of Cabinet of
model 1000 model 1000
Bolt connector
Figure 2-9 Example of Connecting Grounding Wire to Ground Bus
Grounding model 1000's installed at separate locations
When model 1000's are not installed in the same room, ground each of them to one
ground point at each installation site as shown in Figure 2-10.
Ethernet control LAN
Figure 2-10 Example Grounding of model 1000's Installed at Separate Locations
2
(AWG#8) to connect the grounding terminal of each
Cabinet of Cabinet of
model 1000 model 1000
2
1.25mm
22mm
Grounding electrode with
resistance of 100Ω or less
Cabinet of Cabinet of
model 1000 model 1000
2
1.25mm 1.25mm
100Ω or less 100Ω or less
model 1000 Loop Controller L1 User's Manual - Basic Hardware
Cabinet of Cabinet of Cabinet of
model 1000 model 1000 model 1000
2
1.25mm
Lead-in terminal
2
2
22mm
Grounding electrode with
resistance of 100Ω or less
Cabinet of
model 1000
2 2
1.25mm
100Ω or less