SMA SUNNY BOY 4000-US - With SMA DC Disconnect

SMA America, LLC Electrical connection
Installation Guide SB30-40US-IUS103030 41
6.6.2 With SMA DC Disconnect
Connecting the AC cable in the DC Disconnect
1. Turn OFF the main breaker in the main utility breaker box.
2. Remove interior breaker panel cover.
3. If you are replacing an existing inverter, disconnect the wires in the breaker box for the AC line
you are working with.
4. Install a
3
⁄
4
in. conduit fitting in the SMA DC Disconnect AC wiring knockout. Fasten the conduit
fitting on the inside of the SMADC Disconnect with the appropriate locknut.
5. Install
3
⁄
4
in. conduit between the main breaker box and the AC wiring knockout of the
SMADC‑Disconnect.
6. Pull the AC wires through the conduit from the interior of the breaker box to the interior of the
SMA DC Disconnect.
N wire connected to N terminal
L2 wire connected to L2 terminal
L1 wire connected to L1 terminal
Equipment ground wire
connected to PE terminal