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7. AC Connection and Wiring
Safety
Read Section 2, Safety, carefully before connecting AC to the Galaxy Power System.
Table 7-A: Wire Sizing and Ampacity
Standard Ga Metric (mm
2
)
NEC Table 310.15(B)(16)
(Formally Table 310.16)
see Note
10 40
10 55
16 75
25 95
35 130
1/0 50 170
2/0 70 195
4/0 120 260
Note: For NEC code compliance, all conductor sizing calculations for derating due to ambient
temperature and the number of conductors in a conduit are made assuming 90°C rated
conductors.
3/0 95 225
AC Input Schemes
GPS 4848/100: 595 Rectifiers (48V, 200A) and 595LT Rectifiers (48V, 220A)
595 and 595LT series rectifier input and output voltages are as shown below.
Input Rectifier Output
380-480Vac, 3-phase, 50/60 Hz 595A and 595LTA series
48Vdc / 220A
200-240Vac, 3-phase, 50/60 Hz 595B and 595LTB series
The GPS 4848/100 system supports three AC schemes:
· Single bulk 3-wire (3-phase): The panel is factory-equipped to distribute the appropriate
connections to the rectifiers through circuit breakers.
· Multiple bulk 3-wire (3-phase): The panel is factory-equipped to distribute the appropriate
connections to the rectifiers through circuit breakers.
· Multiple 3-wire (3-phase): Connected directly to the terminal strips, which then, distribute the ac
power to the rectifiers. One feed for each rectifier, external circuit overload protection, must be
provided by customer.
Note: All wire sizes are based on the US National Electric Code.
Wire Sizing and Ampacity
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