Inverter output overcurrent protection

[AZElectrical]

I have a project underway where a +24VDC to 120VAC single phase inverter will be installed. The inverter is tied into a battery system, and this is not a PV project -- batteries are used to back-up security circuits and similar. The +24VDC primary side is protected with a 100A DC breaker. The output circuit of the inverter feeds a 120V panel with a 30A main breaker in another room.

The inverter manufacturer provides product literature that states the unit is equipped with current limiting capabilities. If the output current exceeds the rated threshold for a certain amount of time, the inverter is shut down through its own internal logic.

The question is this: Does the 120V output circuit of the inverter require overcurrent protection in the form of a fuse or circuit breaker? Going by the product literature, it seems clear that the inverter will limit any overcurrent condition on it's own, but I'm hoping to get some other thoughts on this.

 

[gadfly56]

I have a project underway where a +24VDC to 120VAC single phase inverter will be installed. The inverter is tied into a battery system, and this is not a PV project -- batteries are used to back-up security circuits and similar. The +24VDC primary side is protected with a 100A DC breaker. The output circuit of the inverter feeds a 120V panel with a 30A main breaker in another room.

The inverter manufacturer provides product literature that states the unit is equipped with current limiting capabilities. If the output current exceeds the rated threshold for a certain amount of time, the inverter is shut down through its own internal logic.

The question is this: Does the 120V output circuit of the inverter require overcurrent protection in the form of a fuse or circuit breaker? Going by the product literature, it seems clear that the inverter will limit any overcurrent condition on it's own, but I'm hoping to get some other thoughts on this.

Is the inverter listed to act as an over current protective device? If not, then I would say you still need an OCPD on the 120V side. I'd be willing to bet a nickel that the shut down feature is strictly to protect the inverter from a "normal" overload like putting a motor with too much starting torque on the output side. How do you think it might react to a bolted short on the AC side without an AC side OCPD?