SMA SB 3000-US - Manual (Page 40)

6 Electrical Connection SMA America, LLC
40 SB30-40-US-IA-en-34 Installation Manual
5. Insert 1 rain-tight or water-tight sleeve (
3
⁄
4
in. (19 mm)) in the enclosure opening of the
DC Disconnect and tighten from the inside using a counter nut.
6. Install 1 rigid conduit (
3
⁄
4
in. (19 mm)) in the enclosure opening.
7. Insert the AC cables of the power distribution grid into the interior of the DC Disconnect through
a rigid conduit.
6.3.2 Connecting the AC Cables to the DC Disconnect
Figure 15: AC connecting terminal plate for connecting the power distribution grid
1. Connect conductor L1 to screw terminal "L1" (torque: 15 in-lb. (1.7 Nm)).
2. Connect conductor L2 to screw terminal "L2" (torque: 15 in-lb. (1.7 Nm)).
3. Connect conductor N to screw terminal "N" (torque: 15 in-lb. (1.7 Nm)).
4. Connect the AC protective conductor to screw terminal (torque: 15 in-lb. (1.7 Nm)).
5. Ensure that all screw terminals are correctly cabled and that the cables are securely positioned
in the screw terminals.
4.
Damage to the DC Disconnect due to penetration of moisture
Electronic components in the inverter can be destroyed or damaged as a result of moisture
penetration.
• Only break out 1 knockout for the connection of the AC cable.
• Do not enlarge the enclosure opening.
Position Designation
A Screw terminal "L1"
B Screw terminal "L2"
C Screw terminal "N"
D Screw terminal