Fire-Lite ACC-25/50DAZS Distributed Audio Panel - Manual (Page 37)

Distributed Audio Panel Manual — P/N 52265:B1 6/8/2010 37
Operating Power Installation
3.3 Operating Power
AC Power and Earth Ground Connection
Primary power source is 120 VAC, 60 Hz, 1.57 amp for the ACC-25/50DA & ACC-25/50DAZS.
Overcurrent protection for this circuit must comply with Article 760 of the National Electrical
Code (NEC) and/or local codes. Make certain that the AC mains circuit breaker is off before mak-
ing any wiring connections between the mains and the panel. Run a pair of wires (with ground con-
ductor) from the protected premises main breaker box to TB10 of the main circuit board. Use 14
AWG (1.6 mm O.D.) or heavier gauge wire with 600V insulation. No other equipment may be
! CAUTION: DISCONNECT POWER
SEVERAL DIFFERENT SOURCES OF POWER CAN BE CONNECTED TO THIS PANEL.
DISCONNECT ALL SOURCES OF POWER BEFORE SERVICING. THE PANEL AND
ASSOCIATED EQUIPMENT MAY BE DAMAGED BY REMOVING AND/OR INSERTING CARDS,
MODULES OR INTERCONNECTING CABLES WHILE THIS UNIT IS ENERGIZED. ALSO, MANY
COMPONENTS ARE STATIC SENSITIVE WHICH REQUIRE THE USE OF PROPER
GROUNDING TECHNIQUES.
Backbox
Transformer Mounting Studs
acc2
5b
kb.wmf
Transformer Mounting Studs
Main Circuit Board
Mounting Studs
P10 Connector -
Transformer
AC
25
daxm
nt.w
m
f
AC Terminal TB10
P11 Connector - Battery
Transformer Assembly
Figure 3.4 Installation of Power Supply Transformer