Nortel Meridian 1 Manual page 433

Table 103
Cabling to connect a QBL15 to batteries
AWG Color From battery string
#1/0 Red Negative terminal
#1/0 Black Positive terminal
Appendix A: NT0R72, NT6D82, QBL12, QBL15, QCA13
Installing a QBL15 distribution box
Use this procedure to install and connect a QBL15 distribution box. When
two QBL15 units are installed, connect the battery only to the distribution box
with the functional circuit breaker.
Table 103 summarizes the connections in this procedure.
1 Unpack the QBL15. Inspect the unit and the meters for damage.
The QBL15 distribution box weighs approximately 25 kg (50 lb).
2 Mount the distribution box securely on a wall or other suitable surface:
• Mount the unit approximately 1.2 m (4 ft) from the floor.
• If batteries are used, mount the unit close enough to the batteries to
allow a voltage drop of not more than.25 V (.50 V on the loop) on
the #1/0 AWG wire between it and the batteries.
3 Open the front cover of the QBL15 and remove the plate that covers the
main circuit breaker (or main fuse—CRS200). Set the circuit breaker to
OFF (or remove the fuse).
4 Install and connect a red #1/0 AWG wire between the negative terminal
of the battery string and the negative input at the top of the circuit breaker
(or fuse) in the QBL15 (see Figure 145).
5 Install and connect a black #1/0 AWG wire between the positive terminal
of the battery string and the positive bus in the QBL15.
6 Replace the plate that covers the main circuit breaker (or fuse). Leave the
front cover open to connect the QBL15 to the rectifiers.
CAUTION
To QBL15
Negative input at the top of the circuit breaker (or fuse)
Positive bus
Page 395 of 500
System installation procedures