User Manual

Siemens Industry, Inc.
Building Technologies Division
P/N 315-099321-77
WIRING The PSC-12 has removable terminal blocks and connectors at the top and bottom of
the module. The terminals and connectors at the top of the PSC-12 are power
limited. The terminals and connectors at the bottom of the PSC-12 are non-power
limited. (Refer to Figure 6.)
Use a separate or dedicated circuit breaker and run the earth ground from a suitable
source to the PSC-12. Check local requirements.
Conduit is not an acceptable Earth Ground Conductor.
Wire in accordance with local codes and Article 760 of the NEC, NFPA latest edition.
In compliance with NEC, all power limited fire protective signaling conductors must
be separated a minimum of a 1/4" from all of the following wiring located within a
control panel:
• Electric light
•Power
• Class 1 or non-power limited fire protective signaling conductor
Refer to the CAB2-BB Installation Instructions, P/N 315-033009-1 for wiring require-
ments to comply with NEC codes.
Figure 6
PSC-12 Wiring In The CAB Enclosures