SMA SB 5000-US - Manual (Page 49)

SMA America, LLC Electrical Connection
SB50US-80US-IA-en-37 SB50US-80US-IA-en-37 49
6.6.3 Connecting the DC Cables in the DC disconnect
1. Open the AC breaker and secure against turning on again.
2. Install a
3
⁄
4
in. cable gland in the breakout opening for the DC cables of the DC disconnect. The
breakout opening is on the left side of the DC disconnect. Secure the cable gland to the inner
side of the SMA DC disconnect with the matching locknut.
3. Install a
3
⁄
4
in. cable conduit between the enclosure of the DC disconnect and the PV array.
4. Pull the DC cables, the grounding cables of the PV array, and the grounding conductor through
the cable conduit and inside the SMA DC disconnect.
Fully open the terminal before feeding through the cables
The DC disconnect has provisions for up to 4 PV strings. The terminal blocks
PV UNGROUNDED and PV GROUNDED each have 4 termination points. This means that
4 pairs of DC input cables can be connected in parallel.
5. Connect the grounding cable of the PV array to the
terminal (A) for the grounding conductor.
6. Connect the grounding conductor to the terminal (B)
for the grounding conductor.