SMA SB 5000-US - Manual (Page 43)

SMA America, LLC Electrical Connection
SB50US-80US-IA-en-37 SB50US-80US-IA-en-37 43
6.5.2 AC Connection in the DC Disconnect
1. Switch off the main switch in the main switchbox.
2. Install a
3
⁄
4
in. cable gland in the breakout opening for the AC cables of the DC disconnect.
3. Between the main switchbox and the breakout opening for the AC cables of the DC disconnect,
install a
3
⁄
4
in. cable conduit.
4. Pull the AC cables from the switchbox through the cable conduit into the DC disconnect.
If you replace an existing inverter
• In the switchbox, disconnect the cables for the AC line on which you are working.
Open terminals fully before feeding through the cables
5. Connect the AC device grounding conductor to the
PE terminal labeled in the DC disconnect.
208 V and 240 V System Configuration
Do not connect the Sunny Boy 8000-US to a 208 V grid.
6. Connect conductor L1 (AC conductor 1 or
UNGROUNDED) to terminal L1.
7. Connect conductor L2 (AC conductor 2) to terminal
L2.
8. Connect conductor N (AC conductor N) to terminal
N.
When using grounded 240 V or 208 V Delta grids
• Connect terminal L2 to the grounded phase.
1 2 3 4 UNGROUNDED GROUNDED L1 L2 N
2 3 5 7 A B + -
GROUNDING ELECTRODE CONDUCTOR COMBINED
2 4 0 V 2 7 7 V 2 0 8 V
PE
GROUNDED L1 L2 N
1 2 3 4 UNGROUNDED GROUNDED L1 L2 N
2 3 5 7 A B + -
GROUNDING ELECTRODE CONDUCTOR COMBINED
2 4 0 V 2 7 7 V 2 0 8 V
GROUNDED L1 L2 N
L2
N