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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
