Load-break switch and cable protection
In PV systems with multiple inverters, protect each inverter with a separate three-phase circuit breaker. Make sure to observe the maximum permissible fuse protection ( > Technical Data). This will prevent residual voltage from being present at the corresponding cable after disconnection.
Loads installed between the inverter and the circuit breaker must be fused separately.
The load-break switch or circuit breaker must be suitable listed (see National Electrical Code® ANSI/NFPA 70) or Canadian Electrical Code® CSA C22.1).
The overcurrent protective device for the AC output circuit is to be provided by others.
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