Johnson Systems J-PACK Series Dimmers User Manual
Page 11
11
Terminal Block Connection Details
NOTE: This option is intended for permanent installation
application only.
Remove the top panel (lid) of the dimmer pack chassis to access
the contractor termination area, where the required dimmer output
(load) terminals are located. To remove the top panel (lid), remove
the ten (10) SEMS #8-32 x 3/8" Philips pan head mountings
screws located on the sides and the six (6) #8-32 x 3/8" Philips
flat head mounting screws located on the top, using a Philips #2
screwdriver, and carefully lift the lid up. The cooling fan is mounted
on the lid, so be careful not to strain the fan wiring cable. If the fan
cable needs to be disconnected, carefully cut off the strain relief
wire tie and unplug the fan connector from the J10 PCB connector.
Be sure to save the mounting screws to secure the top panel (lid)
once the dimmer output (load) wiring terminations are complete.
In suitable locations on the rear panel of the relay pack chassis,
knockout suitable hole sizes for wire/conduit entry to the output
(load) terminals. Ensure an adequate fitting is used to secure the
conduit to the rear panel. Only use wire rated for the specifications
provided below. Route the wire directly from the conduit entry into
the output (load) terminals. Use a 3/16" flathead screwdriver to
torque the power terminals to the specifications provided below.
Each dimmer output (load) circuit (120VAC 1Ø 3-Wire) requires
three (3) conductors; one (1) for hot, one (1) for neutral and one
(1) for ground. There are six (6) hot terminals, six (6) neutral
terminals and six (6) ground terminals, one for each dimmer
output connection.
Once the dimmer output (load) wiring terminations are complete,
carefully reinstall the top panel (lid). If the cooling fan cable was
disconnected, be sure to reconnect it to the J10 PCB connector,
and install a wire tie for strain relief. Carefully slide the lid down
into place, making sure the fan cable does not get pinched in the
metalwork. Secure the lid using the mounting screws previously
removed. To ensure ground continuity between all chassis panels,
be sure to use the SEMS mounting screws with integral star
washers on the sides.
• Use wire size #14 to #8 AWG copper wire only, rated for
300V and 167°F (75°C) minimum.
• Strip insulation length to 0.4" (10mm).
• Torque connections to 13 - 16 IN-LBS (1.5 - 1.8 NM).
WARNING: For connection use copper wire only, rated for
167°F (75°C) minimum.
WARNING: Ensure all dimmer output terminal connections
are tightened to the torque specification provided,
before turning on the AC power supply!
WARNING: Ensure all chassis panels are secure before turning
on the AC power supply!
Load (Hot)
Terminals
Neutral
Terminals
Ground
Terminals