Alpha Technologies APP 9022S - Manual (Page 8)

Safety
016-537-B0-001 Rev. A
8
© 2002 TM
Utility Power Connection Notes
CAUTION: Installation must be performed by qualified service personnel
only, and in compliance with local electrical codes. Connection
to utility power must be approved by the local utility before
installing the power supply.
NOTE: UL and NEC require that a service disconnect switch (UL listed)
be provided by the installer and be connected between the
power source and the Alpha power supply. Connection to the
power supply must include an appropriate service entrance
weather head.
CAUTION: A “high magnetic” trip breaker must be used in order to
accommodate the high-inrush currents normally associated with
the start-up of ferroresonant transformers (400 Amp, no-trip,
first-half cycle). Do not replace this breaker with a conventional
service entrance breaker. Alpha recommends only Airpax
breakers because of increased reliability in this powering
application.