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Installation
3.4 Operating Power
The QX-mini can operate on either 120VAC or 240VAC on the AC mains and battery power
when there is a drop in or complete loss of electrical power. For more information, see section
12.0 Appendix B: Power Supply & Battery Calculations.
3.4.1 AC Power
Connect the AC power (Blue and Black wires) to P1 and P2 on the board.
Figure 19 AC power wiring
1. Ensure that AC mains are wired to proper transformer screw terminals.
2. Ensure Earth Ground Lug is connected to backbox via the green wire.
3. On the opposite side of the transformer, connect the black and blue wires to either P1
and P2 terminals on the main board.
Note: Terminal Polarity does NOT matter for AC power. Wire order is not relevant for
Transformer Input.
Note: ALWAYS route the AC Mains through the dedicated AC Power Knockout and
conduit.
Bottom of QX-mini or QX-mini-BP Board
green
120 VAC
To AC Input
240 VAC 50Hz
120 VAC 60Hz
N
GND
EARTH
GROUND
LUG
P1 P2
From AC
Mains
black
white
black
green
white with
blue stripe
brown
red
blue
Transformer
Signal
240V
Yeo Heung
120V
Neutral
Yellow wire
Red wire
Black wire
Black wire
Brown wire
White with
blue strip wire
Transformer