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LTPS-UM-8007-01, Issue 1
I
AC W
NSTALLING
Observe all safety precautions as specified by local building codes and the National Electrical
®
Code
(NEC). If local building codes specify procedures different from those in this section,
follow local codes.
Before installation, the AC grounding electrode system must be bonded to an AC main service
power neutral/ground bus. Contact your local power company or refer to local practices for
information about codes or restrictions for your installation.
These procedures are to be performed by a licensed electrician.
AC equipment from the service drop to the pad is provided locally. The cabinet requires a
separately protected 120/240 Vac, 60 Hz, single-phase, 60 ampere circuit. Install the AC power
to the AC load center as outlined in the following paragraphs. A surge protector (mounted on
the AC inlet box) is provided.
To accommodate local conditions, power can be supplied from an external cabinet containing
the local service drop and (when required) power meter. The transfer switch and emergency
power inlet may be mounted on the power cabinet when not included with the SPX-CABFIN
cabinet. Utility boxes and any exposed switches should be equipped with locks.
1
Make arrangements with the local power company to furnish a single-phase power drop. Determine whether
the power company requires the installation of a watt-hour meter.
2
Open the end chamber door. Route the power and ground wires from the external commercial power source
through the conduit in the chamber base. Pull the wire at least 10 feet (3m) beyond the foundation pad.
Wire size depends on distance to the source; consult the NEC and local codes. The minimum
recommended wire size is 6 AWG (type XHHW or equivalent).
3
At the AC load box, punch out a conveniently located knockout to accommodate the conduit (or strain relief)
and wires.
4
Place 2-inch electrical conduit from below the false floor to the bottom of the AC load box. Position the
conduit to fit in the knockout at the center-rear of the false floor.
5
Seal the space between the conduit and the conduit opening in the false floor.
6
Open the load box cover, and connect the AC power line to the load center in accordance with the NEC and
local codes for branch circuit installation. Route the wires into the load box through the conduit or strain
relief. Install the wires to lugs L1 (Line 1) and L2 (Line 2). Install the ground wire to the ground bar, and
neutral to the neutral bar.
7
Attach and secure the load box cover.
If the cabinet will not be powered up for an extended period, place a 300W heat source (two
150W light bulbs) inside the cabinet to prevent condensation.
SPX-CABFIN01, SPX-CABFIN04
IRING
November 9, 2001
Installation
19
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