Alpha Technologies APX Series - Manual (Page 27)

27 016-030-B0-005, Rev. C
APX
Connect the load side of the circuit breaker to the black wire from the APX receptacle box
for 120VAC/60Hz operation (or brown wire for 230VAC/50Hz operation).
Connect the neutral bus to the white wire from the APX receptacle box for 120VAC/60Hz
operation (or blue wire for 230VAC/50Hz operation).
Connect the utility ground to the enclosure ground terminal. See Figures 2-15 and 2-16.
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NOTE:
Use a high-magnetic 15A circuit breaker to accomodate the high inrush currents normally associated
with the start-up of ferroresonant transformers (400A, no-trip, half cycle). Conventional service
entrance breakers are not recommended.
High-magnetic breakers for Square D service entrances enclosures are available from
Alpha Technologies:
Description Alpha Part Number Square D Part Number
Circuit Breaker 470-013-10 Q0115HM
Alpha BBX Option 020-085-10 Q02-4L70RB
Table 2-1, High-Magnetic Breaker for Square D Service Entrances
2.0 Installation, continued
2.7 External Service Disconnect
Position the external service disconnect between the utility power connection and the APX.
For pole mount enclosures, attach it directly to the utility pole using 1/4" x 2-1/4" steel wood
screws. If a utility power meter is being used, secure its mounting base in the same manner.
Use a suitable conduit to interconnect the meter base, service disconnect, and power supply
enclosure.