Eaton Single EBC, Installation And Operation Manual

17

External Battery Cabinets

4 .3 

External Power Cables Connecting

WARNING

WARNING

Verify polarity of connections. Risk of personal injury and damage to equipment from arc flash if 
connections are reversed.

• 

TURN OFF UPS AND DISCONNECT UPS FROM POWER SUPPLY BEFORE EBC INSTALLATION.

• 

HIGH TOUCH CURRENT. EARTH CONNECTION MUST BEFORE CONNECTING SUPPLY. As a 
result of the connected loads high leakage current is possible. Connection of the earth (ground) is 
required for proper product operation. Do not check UPS operation by removal of the Earth (ground) 
connection.

To install wires:

1.  Remove the knock-outs in the left or right side plates on the EBC. See Figure 4-9. Refer to the applicable 

UPS Installation and Operation manual or UPS cabinet conduit landing location.

2.  Install conduit between the UPS cabinet and the EBC if needed. If installing a second EBC, install conduit 

between the first and second EBCs. 

3.  Connect the positive (+) and negative (-) power wiring to the DC (+) and DC (-) terminals on EBC 1. Connect 

the ground wiring to the ground terminal on EBC 1. See Figure 4-5. 

4.  Route and connect the other end of the battery cables (positive, negative, and ground) to the UPS DC (+), 

DC (-) and ground terminals. Refer to the applicable Eaton UPS Installation and Operation manual or UPS 
cabinet terminal locations and termination requirements.

5.  Let the EBC stand side by side to the UPS and secure the DC battery cables to the EBC bottom base using 

wire ties after all electrical connections have been completed.

6.  If installing Double EBC (2 cabinets and one cabinet with breaker), proceed to Step 7-12.

7.  Route the battery cables (positive, negative, and ground) from EBC 1(with breaker) DC and ground 

terminals to EBC 2 DC and ground terminal blocks. See Figure 4-5,Figure 4-6 and Figure 4-9 for wiring 
access information and terminal locations. See paragraph 3.2.2, Table 3-3 for wiring and termination 
requirements.

8.  Connect the positive (+) and negative (-) power wiring to the DC (+) and DC (-) terminals in EBC 2. Connect 

the ground wiring to the ground terminal in EBC 2. See Figure 4-5.

9.  Let the 2 battery cabinets stand side by side

10.  Route the battery cables (positive, negative, and ground) from the UPS to the EBC 1(with breaker) DC and 

ground terminal blocks. See Figure 4-5 and Figure 4-9  for wiring access information and terminal 
locations. See paragraph 3.2.2, Table 3-3 for wiring and termination requirements. 

11.  Let the EBCs stand side by side to the UPS and secure the DC battery cables to the EBC bottom base 

using wire ties after all electrical connections have been completed.

Wires enter/out from rear bottom or knock-out holes on 2 side plates. 

NOTE