Alpha Technologies PN-4 - Manual (Page 16)

3. Installation
16
031-103-B0-003 Rev. C © 2002 TM
3.3 Utility Powering
The XM2 Power Supplies are powered by either 120VAC or 240VAC (depending upon the model), attached to an external
service entrance. The size of the service conductors must be based upon the actual size of the utility service and be in
accordance with applicable electrical code requirements.
The utility conduit may be placed in one of two locations, depending upon the utility service entrance requirements. Note the
optional conduit location for use with meter base and the standard location for entry directly to the load center.
Proper grounding is critical. The enclosure MUST have a hard-wired ground to the service entrance. A qualified electrician
will need to verify that grounding is in compliance with applicable electrical codes. (Refer to section 2.3, "Enclosure
Grounding".
NOTE: All applicable codes must be adhered to when installing a system, pouring concrete, or placing a
preformed pad. These codes supersede any procedures outlined in this document.
NOTE: All mounting hardware must be stainless or galvanized, depending on local environmental
conditions. Use of improper hardware may cause corrosion, which is not covered under warranty.
NOTE: Soil conditions vary and may affect the integrity of the pad. Alpha Technologies recommends that
proper steps be taken to ensure that the soil supporting the pad is stable. Improper installation
of the pad may cause uneven settling or cracking, which is not covered under warranty.
Both standard and EUSERC style meter bases are available for some configurations as illustrated in the following
figures. Consult Alpha Technologies or your local representative regarding compatibility with your specific application.
CAUTION: The following utility powering procedures must be performed only by qualified service personnel
and in compliance with local electrical codes.
Verify electrical codes prior to installation. Codes may vary and contain specific conduit and wire sizes for
connection to the service entrance.
Connection to utility power must be approved by the local utility before installing the power supply.
The enclosure is equipped with a Square D, rainproof service entrance (SUSE rated). The service entrance is equipped with
a circuit breaker for a 120/240VAC, split phase, 3-wire w/GND source.
Materials Required:
1" diameter conduit (or larger)- PVC or Galvanized Steel (threaded)
#6 AWG - Red /stranded insulated wire
#6 AWG - Black / stranded insulated wire
#6 AWG - White / stranded insulated wire
#2 AWG or larger - Stranded copper ground wire