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Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 47
Operating Power Installation
Use 14 AWG (1.6 mm O.D.) or heavier gauge wire with 600V insulation. No other equipment may
be connected to this circuit and it may not contain any power disconnect devices. A separate Earth
Ground connection must be made to ensure proper panel operation and lightning and transient pro-
tection. Connect the Earth Ground wire (minimum 14 AWG) to one of the transformer mounting
studs. Do not use conduit for the Earth Ground connection since this does not provide reliable pro-
tection.
Secondary Power Source (Batteries)
Observe polarity when connecting the batteries. Connect the battery cable to P10 on the main cir-
cuit board, using the plug-in connector and cable provided. The battery charger is current-limited
and capable of recharging sealed lead acid type batteries (See Figure 3.5 for battery orientation).
The charger shuts off when the system is in alarm. page 98 for calculation of the correct battery rat-
ing.
!
WARNING: RISK OF PERSONAL INJURY
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 IMME-
DIATE MEDICAL ATTENTION.
Figure 3.5 Operating Power Connections
a
c
2
5
p
o
w
r
.
w
m
f
ACC-ZSM Mounting Bracket
VAC
Hot (black)
Neutral (white)
Ground (green)
Connect Earth Ground
wire to ground stud
black red
two 12 VDC
batteries