Alpha Technologies UPE-6 - Manual (Page 17)

17 031-124-C0-004, Rev. D
Wiring From Duplex Receptacle to Service Disconnect:
In most cases, the following confi gurations qualify for service entrance use; however, other
codes may apply. Always contact your local utility to verify that the wiring conforms to
applicable codes.
240Vac Service (XM Series 2 915-240 Power Supply for UPE-3 and UPE-6):
Enclosures used with the XM Series 2 915-240 is equipped with one or two 240Vac duplex
receptacles to provide power to the power supply and peripheral equipment. The receptacle,
NEMA 6-15R, is protected by a single, 2-pole, common trip 15A circuit breaker located inside
the service entrance. Wiring is typically 14AWG per NEC code, a grounding clamp, located
on the enclosure, facilitates dedicated grounding.
120Vac 20A Service (XM Series 2 915-120 Power Supply):
Enclosures used with the XM Series 2 915-120 are equipped with one or two 120Vac duplex
receptacles to provide power to the power supply and peripheral equipment. The receptacle,
NEMA 5-20R, is protected by a single pole 20A circuit breaker located inside the service
entrance. Wiring is typically 12AWG per NEC code, a grounding clamp, located on the
enclosure, facilitates dedicated grounding.
120Vac 15A Service (XM Series 2 615):
Enclosures used with the XM Series 2 615 are equipped with one or two 120Vac duplex
receptacle to provide power to the power supply and peripheral equipment. The receptacle,
NEMA 5-15R, is protected by a single-pole, 15A High Magnetic circuit breaker located inside
the service entrance. Wiring is typically 14AWG per NEC code, a grounding clamp, located
on the enclosure, facilitates dedicated grounding.
2.0 Installation, continued
2.6 Utility Power Connection
Utility power enters the enclosure through the side or bottom of the UPE. The enclosure
accepts a standard electrical fi tting. The UPE Series can be equipped with an optional circuit
breaker assembly located in the enclosure’s module compartment.
A “high-magnetic” or HACR (Heating, Air Conditioning, Refrigeration) circuit breaker must be
used in order to accommodate the high-inrush currents normally associated with the start-up of
ferroresonant transformers (400A, no-trip, fi rst-half cycle). Do not replace this circuit breaker with
a conventional service entrance circuit breaker. Alpha recommends Square D circuit breakers
ONLY because of increased reliability in this powering application.
CAUTION!
Utility Power Connection procedure must ONLY be performed by qualifi ed service personnel and
in compliance with local electrical codes and common safety practices. Connection to utility power
must be approved by the local utility before installing the power supply.
NOTE:
Alpha recommends wiring with 12AWG to accommodate upgrade from 240Vac 15A to 120Vac 20A.
NOTE: