Ground bar
Knockouts for ground conductors
Figure 3-1Ground Conductor Knockouts
The ground bar accepts wires up to #4 AWG. Torque ground wires as specified in Table 3-1.
Table 3-1Torque Values for Ground Wiring
Wire Size | | Torque Value |
AWG | mm2 | in-lb | Nm |
14–10 | 2.5–6.0 | 25–35 | 3.0–4.0 |
8 | 10 | 30–40 | 3.4–4.5 |
6–4 | 16–25 | 35–45 | 4.0–5.0 |
Important: In most models, the negative PV conductor is internally bonded to the ground system within the inverter’s ground fault detection circuit. Inverter models marked with the “-POS” suffix are positive grounded and have the positive PV conductor internally bonded to the ground system through the inverter’s ground fault protection circuit. It is important that the negative (or positive) PV conductor is not bonded to the ground at any other point in the system.
