32
Figure 29: Wiring box - PV input connections
1.
Verify that the exposed wires are at least 6 inches in length to provide adequate strain
relief and wire end strip length required. Secure the conduit into both fittings then tighten
conduit fittings to manufacturer’s recommended torque.
2..
Connect the positive lead from each PV array string to 1 of the PV_Positive Terminals (A) in
the wiring box compartment. Using a 3/16” (4 mm) flat blade cabinet screw driver tighten
the screw terminal to 10.5 in-lbs (1.2 Nm) of torque.
Note:
If the PV Array contains more than 3 PV Module strings then an external PV com-
biner is recommended.
3.
Connect the negative lead from each PV array string to 1 of the PV_Negative Terminals (B)
in the wiring box compartment. Using a 3/16” (4 mm) flat blade cabinet screw driver tighten
the screw terminal to 10.5 in-lbs (1.2 Nm) of torque.
4.
Verify Inverter to wiring box compartment connections DC wiring board assembly:
•
“BLACK“ wire goes to “PV_Positive” Terminal
A
•
“WHITE” wire goes to “PV_Negative” Terminal
B
-
+
A
B
A
B
PV_Positive Terminals
The PV Array positive or negative leads must not be connected to
ground before the inverter!
All screw terminals accept solid or stranded copper 14 – 6 AWG
wire only. A 3.5 mm flat blade screw driver is recommended for
tightening screw terminals to a 10.5 in-lbs. (1.2 Nm) torque.
INFORMATION!
INFORMATIONS!
INFORMATION!
INFORMATIONS!
PV_Negnative Terminals
