Toshiba 431B Manuale Utente

 

4300 Series Ancillary Cabinets Installation and Operation Manual

   

Be sure to ground the UPS and ancillary cabinets as specified.
Using the UPS and ancillary cabinets without a proper ground will 

deteriorate the insulation, cause leakage of currents and electric 

shock.  The resistance to ground should be 10 ohms or less. 

The earth grounding bus for 431A and 431B are located inside, at the bottom-left front of each cabinet. 
The earth grounding bus for 431M is located on the right side wall just above the inter-cabinet access 

port.
Use a AWG 2 (or 38 mm

2

) or larger cable for the grounding wire. Run the grounding wire through the 

opening at the bottom, through a hole in the top knockout plate or through the side access hole.  Connect  

the grounding wire to the earth ground bus.
The ground wire must have a crimp terminal with a 3/16 in. (4.76 mm) diameter screw hole. The ground 

bus has  twelve (12) 0.163  in. (4.1 mm) holes tapped for a 10/32 screw.  Connect the crimp terminal and 

ground bus together using a 10/32 screw.