Johnson Systems JS-ICON Series Dimmer/Relay Rack (2410,2413,1220,1210/620) - Manual (Page 6)

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Power Supply Connection Details
The JS-ICON ™ Series dimmer racks are capable of various 120V power
supply configurations. The contractor termination section is located on the
left-hand side. Knockouts on the top and bottom of the chassis are provided
for wire/conduit entry to the power terminals. The phase power terminals
are mounted directly onto copper bussbars, used to distribute current to
each dimmers circuit breaker. The power terminals may be rotated up to 180
degrees to facilitate top or bottom wire entry. To rotate the power terminals,
loosen the 1/4-20 x 1/2" mounting bolts (use a 7/16" wrench or socket), rotate
terminals into place, and tighten the mounting bolts to 45-50 IN-LBS (5.0-5.6 NM).
WARNING: Wiring termination must be done by qualified personnel only!
WARNING: Be sure all power connections are tightened to specification
before power supply is turned on.
Power Supply Configurations - Three Phase:
120/208 VAC, 3Ø, 5-Wire up to 100 Amps per phase. Maximum 28.8kW total.
Use wire size #14 to #1/0 AWG. Strip insulation length to 0.65" (16.5mm).
Torque power terminals (A, B, C) to 45-50 IN-LBS (5.0-5.6 NM).
Below is the dimmer phasing for each JS-ICON ™ Series dimmer rack model:
JS-ICON ™ 2410 and JS-ICON ™ 2413 (Example shown to the left)
• Dimmers 1 to 8 are powered from Phase A.
• Dimmers 9 to 16 are powered from Phase B.
• Dimmers 17 to 24 are powered from Phase C.
JS-ICON ™ 1220
• Dimmers 1 to 4 are powered from Phase A.
• Dimmers 5 to 8 are powered from Phase B.
• Dimmers 9 to 12 are powered from Phase C.
JS-ICON ™ 1210/620
• Dimmers 1 to 8 are powered from Phase A.
• Dimmers 9 to 14 are powered from Phase B.
• Dimmers 15 to 18 are powered from Phase C.
NOTE: Power supply requires an external disconnect.
NOTE: For connection use copper wire only, rated 167°F (75°C) minimum.
∅ A
∅ B
∅ C