Lightronics AR1202 - Manual (Page 5)

Page 5 of 22
AR – 1202 RTC ARCHITECTURAL DIMMER
Revision 1.93 OWNERS MANUAL 06/03/2008
www.lightronics.com
Lightronics Inc. 509 Central Drive Virginia Beach, VA 23454 Tel 757 486 3588
SINGLE PHASE POWER CONNECTIONS
REQUIREMENTS
The RA-122 can operate as a single phase unit using
using only 2 phases of a 3 phase power source. This
is NOT RECOMMENDED since it causes an
unbalanced load at the power source.
The feed circuit must be able to supply 120 Amps for
each line.
CONNECTIONS
There are three terminals on the input power terminal
block (
H1, H2, H3 ). When operating the AR-1202 on
single phase power, the center ( H2 ) terminal is not
used.
The wires connected to the left side of the H2 terminal
contain color coded sleeves (RED and BLUE). These
wires must be moved and distributed to the H1 and H3
terminals. Remove the wires from the H2 terminal
and connect them to H1 and H3 such that the sleeve
color matches the wire colors on H1 and H3.
Connect the feed neutral to the NEUTRAL bus bar.
Connect the feed ground t
o the GROUND lug.
HIGH VOLTAGE CIRCUITRY IS EXPOSED WHEN
THE CABINET DOOR IS OPEN. DO NOT ALLOW
THE UNIT TO OPERATE OR HAVE POWER
APPLIED TO IT WHILE THE DOOR IS OPEN.
WARNING
MAKE CERTAIN POWER IS REMOVED
FROM THE FEED CIRCUITS
BEFORE YOU BEGIN INSTALLATION.
POWER IN
SINGLE PHASE
120/240 VAC
BLACK
RED BLUE
BLUE
RED
MARKER
BLACK
MARKER H1
H3
H2
NOT
USED
SINGLE PHASE POWER CONNECTIONS