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UL Power-limited Wiring Requirements
26
Document #50066 Rev.D2 12/03/02 P/N 50066:D2
2.6
UL Power-limited Wiring Requirements
Power-limited and nonpower-limited circuit wiring must remain separated in the cabinet. All power-limited circuit
wiring must remain at least 0.25" away from any nonpower-limited circuit wiring. Furthermore, all power-limited
circuit wiring and nonpower-limited circuit wiring must enter and exit the cabinet through different knockouts and/or
conduits. A typical wiring diagram for the MS-5024 is shown below.
B+ B- B+ B- B+ A+ A- B- B+ B- B+ B-
1
2
3
4
1
1
2
2
3
4
TEST CONNECTOR
J1
J3
BELLS
1 2
TB5
TB4
TB3
TB2
TB1
NO NC C NO NC C
ZONE 1 ZONE 2
ZONE 4 ZONE 5
ZONE 3
P
R
IM
A
R
Y
S
E
C
O
N
D
A
R
Y
KISS OFF
/LOAD
LED 3
PR
IM
AR
Y
AC
TIV
E
LE
D
1
SE
C
O
NDAR
Y
AC
T
IV
E
LE
D
2
24V NON-
RESETTABLE
24V
RESETTABLE
- +
ADM-24
FIGURE 2-8:
Typical Wiring Diagram for UL Power-limited Requirements
AC Power
Earth
Ground
Power-limited Circuits
Nonpower-limited Circuits
Power-limited Circuits
Power-limited
Circuit
Summary of Contents for MS-5024
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