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XTE 802 Series Walk-In-Cabinet (WIC) Description & Installation Manual (631-205-434)
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Rev. D
92
AC Input Connections to Power Transfer Load Center (PTLC)
E/W Automatic Transfer Switch (ATS)
The WIC requires separate AC feeds for the rectifiers, AC outlets, HVAC unit and external lighting. These AC
feeds are factory connected to the externally-mounted Power Transfer Load Center (PTLC) and fed via
individual circuit breakers.
The PTLC requires 120 VAC / 240 VAC, single phase, 60 Hz commercial AC. The PTLC is rated for 200 A.
Refer to
on page 36 for location of the PTLC. Refer to
for a typical PTLC wiring diagram.
Make connections to the PTLC per the current edition of the American National Standards Institute (ANSI)
approved National Fire Protection Association's (NFPA) National Electrical Code (NEC), and applicable local
codes.
The following procedure shall be performed by a trained electrician.
Procedure
1.
Use a non-contact voltage detector to verify the WIC is safe.
2.
Verify that the WIC is properly grounded.
3.
Verify that all breakers in the external PTLC are in the OFF position.
4.
Refer to the schematic drawings shipped with your WIC for a detailed AC wiring diagram. See also
5.
Open the PTLC dead front panel for access to AC utility input terminals (
CAUTION!
The PTLC and the WIC are configured for a 200 A, 240 VAC single phase supply ONLY.
Connection of other voltages or phase sources will cause damage to the WIC and its components.
6.
Determine the AC cabling route into the PTLC for your installation site. The site installation electrician
must use a suitably-sized conduit hole punch to make a sealable conduit entry into the bottom left of
the NEMA 3R weatherproof PTLC cabinet to access the site utility feed terminals. Only weather-rated
compression conduit fittings are permitted for use.
7.
Route the site AC utility, 200 A, 240 VAC, 1-Ph, 3-wire plus ground conductors from the utility metering
cabinet to the WIC external PTLC via a sealed conduit connection.
NOTE!
All green/yellow terminals are bonded to the Neutral/Ground bus in the PTLC. The site
electrician shall provide ground wires per NFPA 70 (NEC) and applicable codes and standards.
8.
Connect the above feeds as required. Strip the leads before inserting into terminal block. Apply a
coating of anti-oxidation paste (i.e.: “No-Ox”) to the conductors before inserting them into the terminal
block. Torque the fasteners as required. Test the lead connections by gently pulling on them.
9.
After cables are installed, refer to the “Sealing Cable Entries” on page 81 and seal all cable entries and
conduits.
