Power Connections
2. Installation
MS-4412B/MS-4424B Instruction Manual PN 15125:G1 10/22/02
15
Power Connections
WARNING: Do not apply any type power to this control panel until all connections have been
made and verified.
AC Connections
Disconnect (open) the circuit breaker in the AC main breaker panel and tag it “Out of Service”.
Note:
Refer to "Power-Up Procedure" on page 28 before closing AC breaker.
Primary power required for the MS-4412B and MS-4424B control panel is 110/120 VAC, 50/60 Hz, 1.2
amps and for the MS-4424BE is 220/240 VAC, 50/60 Hz, 0.6 amps.
Overcurrent protection for this circuit must comply with Article 760 of the National Electrical Code (NEC)
and/or local codes. Use #14 AWG (2.00 mm
2
) or larger wire with 600V insulation rating.
A separately fused and protected power connection to the panel should be supplied to prevent voltage
fluctuation and interruption of power.
Figure 3 AC Power Connections
Battery (DC) Connections
WARNING: Battery contains sulfuric acid which can cause severe burns to the skin and eyes and
can destroy fabrics. If contact is made with sulfuric acid, immediately flush the skin or eyes with
water for 15 minutes and seek immediate medical attention.
CAUTION:
Do NOT connect the battery interconnect wire, or one battery lead in the case of the MS-
4412, at this time. Make this connection AFTER initial system primary power connection.
Place batteries into bottom of cabinet as shown below. See "Appendix A: Secondary Power Calculations"
on page 35 for calculation of correct battery rating.
Note:
Batteries are shipped separately and should be mounted only after the cabinet has been installed, the conduit
connected, and all wiring pulled, tested, and made ready to be terminated.
Observe polarity when connecting the batteries.
!
J9
TB1
MS
44
B-
AC
con
n
.cd
r
Ground
Neutral
Hot
!
!
