
Page 28
P O W E R I N G T E C H N O L O G Y
Document Number: MS0031-MAN rev. 7
guardian_access_ms31-man-rev7-0521.indd
4.9 DC Load Connection
This section details how to connect the loads to the DC load breakers. Use suitably sized
cables according to Table 4-1 on page 22.
Check that all the MCB’s are in the OFF position.
1. Connect the negative (-) DC supply cable to the appropriate negative DC distribution
MCB by inserting the stripped cable in the opening on top of the MCB and tightening the
screw. Make sure that the cable has the correct rating for the selected MCB.
2. Connect the positive (+) DC supply cable directly to the positive bus bar by inserting the
stripped cable to the hole on top of the screw connector so that the cable is behind the bus
bar, and then tightening the screw. Start connecting the loads to the bus bar from the first
connector on the left. Make sure, the cable is the correct rating for the load. Check, that
all the cables are secured tightly to the connectors.
Use Torque table in the Maintenance and Troubleshooting Chapter for the correct torque.
MCB
Fuse
alarm
cable
Negative
Load
Cable
Load 0V
Load -48V
Figure 4-8 DC Load Connection