ETC Unison Auxiliary Enclosure Series - Manual (Page 17)

4
Connect Line Power 14
C h a p t e r 4
Connect Line Power
Line input wires in main breaker or cross-bussed DRd applications terminate in the Auxiliary
enclosure. Interconnect cables are fed through the side conduit knockouts of the auxiliary
enclosure and connect to the adjacent DRd enclosure(s).
Main Breaker power input options include:
• AX6-MCB-1-150 – 1Ø, 3-wire, 150A
• AX6-MCB-3-100 – 3Ø, 4-wire, 100A
• AX12-MCB-1-300– 1Ø, 3-wire, 300A
• AX12-MCB-3-200 – 3Ø, 4-wire, 200A
• AX12X-MCB-1-400 - 1Ø, 4 wire, 400A (use with 2 DRd12 cross-bussed enclosures)
• AX12X-MCB-3-400 – 3Ø, 4-wire, 400A (use with 2 DRd12 cross-bussed enclosures)
Main Lug power input options include:
• AX12X-ML-1-600 – 1Ø, 3-wire, 600A Main lugs (use with 2 DRd12 cross-bussed
enclosures)
• AX12X-ML-3-400 – 3Ø, 4-wire, 400A Main lugs (use with 2 DRd12 cross-bussed
enclosures)
W A R N I N G : All enclosure terminations must be done with the power off. Enclosures
installed without an accessible power disconnect device cannot be serviced
or operated safely. In some instances, this device may be an auxiliary
enclosure with a main circuit breaker. Follow all local codes and
restrictions.
C A U T I O N : Load wires used with ETC dimming systems must be copper. Do not use wire
containing aluminum. Line wires must be copper for the AX Main Lug enclosures.
Main circuit breaker enclosures are listed for use with copper or aluminum wire.
N o t e : Before removing dimmer or control modules for service, de-energize the main
feed to the dimmer rack and follow appropriate Lockout and Tagout procedures
as described in NFPA Standard 70E. It is important to note that electrical
equipment such as dimmer enclosures can present an arc flash safety hazard if
improperly serviced. This is due to available large Short Circuit Currents on the
feeders of the equipment. Any work on energized equipment must comply with
OSHA Electrical Safe Working Practices.