Wiring Considerations 21
8.2 ControlWiring
Control wiring must be strande d and tinned and run in individual sep arate steel conduits. Con-
trol wiring must be separat ed from power wiring. In addition, ea ch control wiring cable group
should be run in a separate conduit to minimize control signal interference.
Refer to the ControlConnection Locations and Control Wire Lists, Figure 33 through Figure 52.
Notice that there are nine cable grou psin a ty pical system:
• Cable group 1 carries signalsfor the Module BatteryDisconnect.
• Cable group 2 is forthe remote communications options: modem, remote terminaland remote
CRT.
• Cable group 3 carries signals for the Remote EmergencyM oduleOff and Remote Emergency
Power Off.
• C able group 4 carries signals for the optional Remote Status Panel.
•Cablegroup5isfortheoptionalSiteScansystem.
• Cable group 6 carries signals for the reduced battery charge limit and the reduced input cur-
rent limit.
• Cable group 7 carries signals to and fr om the maintenance bypass switchgear.
• Cable groups 20 and 21 carry signals for general housekeeping, modules to SCC.
Other cable groups will be required for other optio nal equipment. If your system has any installed
options, specialwi relists will be included in your Submittal Drawing Package. Contact your Lie-
bert Sales Representativefor assistance if the submittal drawings have been lost or misplaced.
Figures AA and BB show the typicallocation of control connections inside the UPS and SCC. The
position of a particularc ontrolconnection may be different for your system, depending on the
model and the installed options.
NOTE
The UPS control and comm unication wiring are considered Class 2
circuits by NEC standar ds. However, NEC Class 1 wiring methods are
required for these circui ts to ensure proper operation of the UP S.