3 connecting the ac cables in the sunny boy, Connecting the ac cables in the sunny boy, 277 v system configuration – SMA SB 5000-US User Manual
Page 44
Electrical Connection
SMA America, LLC
44
SB50US-80US-IA-en-37
Installation Manual
277 V System Configuration
11. Tighten the cables with a torque of 15 in-lb. (1.7 Nm).
12. Check that all terminals have the correct wiring and that the cables are secure.
6.5.3 Connecting the AC Cables in the Sunny Boy
9. Connect conductor L1 (AC conductor 1 or
UNGROUNDED) to terminal L1. Do not use terminal
L2.
10. Connect conductor N (AC conductor N) to terminal
N.
1. Using a screwdriver, make a hole in the rubber
grommet in the inverter.
2. Remove the rubber membrane.
3. Feed the cable through the rubber grommet into the
inverter.
2 3 5 7
A B + -
2
4
0
V
2
7
7
V
2
0
8
V
2 3 5 7
A B + -
2
4
0
V
2
7
7
V
2
0
8
V
2 3 5 7
A B + -
2
4
0
V
2
7
7
V
2
0
8
V
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