Figure 14 - Top View Showing Ac And Dc Connection - Alpha Technologies AMPS HP2 Power System Installation & Operation Manual

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1" knockout for rectifier 
AC feed (if equipped)
Frame Ground*
* Remove masking tape 
to expose bare metal�
Front cover wiring
1/2" knockout for MBS 
auxiliary contacts
4.5.1 Wiring Gauge
The required gauge of the AC input, DC+/DC- input and AC output cabling is determined by the current rat-
ing, circuit breaker rating, typical ambient temperatures and the applicable local electrical codes. Typically
the AC input and standard AC output is five wires (L1, L2, and L3, N, G) up to 350 kcmil THHW or RW90 type
cable that connects to the HP system with trade size up to 2.5" conduit.
4.5.2 Grounding
Refer to Figure 14 for connection points for frame ground, see Figure 15 for AC input ground and AC output
ground.
0260080-J0 Rev D
Figure 14 — Top view showing AC and DC connection
Frame Ground
Thermoplastic top cover 
for DC cabling
(cut as required for 
pass through)
4 x 2" knockouts for 
AC input and AC
output
Removable side 
covers
29

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