Alpha Technologies Node Power Supply User Manual
Page 26
26
031-295-B0-001 Rev. A
2.0 Installation
2.5
Connecting the Utility Power, continued
2.5.1 Service Power
Connecting to utility power must be performed by qualifi ed service personnel 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.
UL and NEC require that a UL-listed service disconnect switch be installed between the power source and the
power supply. Connection to the power supply must include an appropriate service entrance weather head.
Fig. 2-7, 120Vac Service Entrance Wiring
Utility power enters the enclosure through a 70A rainproof SUSE-rated breaker box.
ATTENTION
NOTE:
From Utility
L1 (Black)
Copper Ground Wire
#8AWG minimum
Breaker
Grounding Point
(made to enclosure wall)
Neutral Bus
Neutral (White)
to Enclosure receptacle
The service entrance is wired as shown in the diagram below.
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