Additionally required material (not included in the scope of delivery):

• 1 metal conduit: 25.4 mm (1 in)
• 1 UL-listed rain-tight conduit fitting for wet locations: 25.4 mm (1 in)

Cable requirements:

• The AC cable must be approved for temperatures of over +90°C (+194°F).
• The AC cable must be designed in accordance with the local installation requirements.
• The AC cable must be made of solid wire or stranded wires.
• Conductor cross-section: 10 mm² to 6 mm² (8 AWG to 6 AWG)
• Conductor type: copper wire
• The maximum cable length subject to conductor cross-section must be observed.

Load-break switch and cable protection:

• In PV systems with multiple inverters, protect each inverter with a separate three-phase circuit breaker. Observe the maximum permissible fuse protection ( > Technical Data). This will prevent residual voltage from being present at the corresponding cable after disconnection.
• The load-break switch or circuit breaker must be listed (see National Electrical Code^®, ANSI/NFPA 70)
• Loads installed between the inverter and the circuit breaker must be fused separately.
• The overcurrent protection for the AC output circuit is to be provided by others.

Compatible grid configurations:

* A neutral conductor connection is necessary for the 480 V / 277 V WYE. A neutral conductor connection is not necessary for the 480 V Delta.

** For connection to 480 V Delta commercial services where co-located loads may result in recurring and persistent line-to-ground faults (effectively resulting in a corner grounded Delta grid configuration), inverters must be protected from excessive line-to-ground voltages by isolating the PV system from the source(s) of the fault(s).