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Input Power Wiring
WARNING: Because DS packs operate at potentially lethal voltages, installation wiring should be done by
qualified personnel only!
WARNING: Do no connect chassis Ground to Neutral, or operate this equipment without a chassis ground,
otherwise the user could be exposed to potentially lethal voltages.
The DS dimmer pack must be fed with one of the electrical services listed below. The service should be protected by
a suitable circuit breaker. Wiring should be selected, sized and installed in accordance with local electrical codes as
should all aspects of the installation. All wire must be copper, and be rated for 90
For convenience, suggested portable cord sizes are shown in parenthesis. They are sized for the full capacity of the
dimmer pack and for the 60
Model DS8-12: 1 phase, 3 wire plus ground, 120/240 VAC, 40 Amps, 47 – 63Hz
( Type S/SO, 4 conductor, #6 AWG minimum)
Model DS12-12: 3 phase, 4 wire, 120/208 VAC, 40 Amps, 47 – 63Hz
( Type S/SO, 5 conductor, #4 AWG minimum)
1 phase, 3 wire, 120/240 VAC, 60 Amps, 47 – 63Hz SEE RE-WIRING PROCEDURE
( Type S/SO, 4 conductor, #2 AWG minimum)
Model DS8-24: 1 phase, 3 wire, 120/240 VAC, 80 Amps, 47 – 63Hz
( Type S/SO, 4 conductor, #2 AWG minimum)
Model DS12-24: 3 phase, 4 wire, 120/208 VAC, 80 Amps, 47 – 63Hz
( Type W, 5 conductor, #2 AWG minimum)
( Type G, 4 conductor, #2 AWG minimum)
1 phase, 3 wire, 120/240 VAC, 125 Amps, 47 - 63hz SEE RE-WIRING PROCEDURE
( Type W, 4 conductor, #1 AWG minimum)
( Type G, 3 conductor, #1 AWG minimum)
Connect input feeder wires to labeled input terminal terminals provided.
NSI DS8/DS12 MODULAR DIGITAL DIMMING SYSTEM
Software Revision 1.1x, 8/24/99
o
C-rated plug that is likely to be installed on the other end.
- 3 -
o
o
C sized for 75
C ampacity.
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