ETC Unison Auxiliary Enclosure Series - Manual (Page 20)

17 Unison Enclosure Installation
Route and Connect Interconnect Cables to Adjacent DRd Enclosure(s)
ETC has supplied extra flexible wire for phase, neutral, and ground lugs from the auxiliary
enclosure to the DRd enclosure(s). Once your auxiliary and DRd enclosures are installed,
feed the load wires through the side chase nipples to the adjacent DRd enclosure phase,
neutral, and ground lugs. Your AX6, AX12, or AX12X will be supplied with one or two sets
of cables, depending on the model ordered.
Step 1: Route the ETC supplied interconnect cabling through the conduit knockouts on
either side of the auxiliary enclosure to the adjacent DRd enclosure(s).
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Step 2: Pull each cable to the appropriate lug. It is necessary to cut the cable to the
pre-marked length in DRd6 applications
Step 3: Attach each cable to its appropriate phase, neutral and ground lugs inside the
DRd enclosure using the supplied copper foil to avoid damaging the fine
stranding of the extra flex wire.
Step 4: Tighten the lugs to the correct torque based on cable size. Refer to the table on
the previous page.
Step 5: Fill empty spaces of the conduit openings with UL/CE approved filler.
N o t e : Tie wrap the interconnect cables to the back wall of the DRd immediately after
they are pulled through the conduit fitting. This prevents the cables from
unnecessarily restricting the air flow to the fan.
N o t e : When a single phase auxiliary enclosure is ordered from the factory, the
interconnect cables will be installed in a single-phase configuration. Reference the
DRd Enclosure Installation Manual for instructions to configuring the DRd
enclosure bus for single phase operation.
C A U T I O N : Failure to use the proper torque when tightening the set screws can cause
premature failure of the equipment.
C A U T I O N : Air leaks can cause DRd enclosures to shut down due to insufficient air flow.
Reference “Sealing Enclosure Air Leaks,” page 18 .