Power-Limited Wiring Requirements - Fire-Lite MS-2E' MS-4E User Manual

Installation

2.5 Power-limited Wiring Requirements

Power-limited Circuits
+
Nonreset
J9
J7
AC Power
24
Power-limited and nonpower-limited circuit wiring must remain separated in the
cabinet. All power-limited circuit wiring must remain at least 0.25" (6.35 mm) away
from any nonpower-limited circuit wiring. Furthermore, all power-limited and
nonpower-limited circuit wiring must enter and exit the cabinet through different
knockouts and/or conduits. A typical wiring diagram for the MS-4 is illustrated below.
- + -
A+ A- A+ A- A+ A-
Resettable
CLASS A CLASS A CLASS A CLASS A
ZONE 1
NAC 1 NAC 2
CAC-4
FIRE ALARM SUPERVISORY
FIRE ALARM SUPERVISORY
FIRE ALARM SUPERVISORY
FIRE ALARM SUPERVISORY
NAC ZONE
AC
POWER DISABLE DISABLE
ALARM
ACK
SILENCE
ENABLE/DISABLE
1 2
TB8
HOT NEUT EARTH
Figure 2.9 Typical UL Power-limited Wiring Requirements
Nonpower-limited Circuits
C NC NO
A+ A- A+ A- A+ A-
ALARM
CLASS A CLASS A
ZONE 2
ZONE 3 ZONE 4
ZONE 1
TROUBLE MAINTENANCE
ZONE 2
TROUBLE MAINTENANCE
ZONE 3
TROUBLE MAINTENANCE
ZONE 4
TROUBLE MAINTENANCE
NAC POWER WALK ALARM
SYSTEM
FAULT SILENCE
TROUBLE TROUBLE TEST
WALK
RESET
TEST
ZONE
3 4
JP1
JP2
EARTH BATT CHG
J8
BATTERY
SW1 SW2 SW3
Power-limited Wiring Requirements
C NC NO
SUPV
4XLB
Power-limited
Circuits
4XLMF
4XTMF
Nonpower-limited
Circuit
MS-2/MS-4 PN 51512:D 10/18/04