Kevin Whitten
Member
- Location
- Dresher, Pennsylvania, USA
I am currently trying to size the following inverter to meet NEC Code for a project:
500kW Inverter
- 1750A max dc current
- 14 inputs with 125A fuses
285W Panel
- 8.53A Isc
The fuses cannot be changed in this inverter. The typical current per input that I have would be roughly 110A, however when I size the inputs for oversized current according to the NEC, I obtain roughly 173A (8.53A x 13 strings/combinder box on said input x 1.25 x 1.25). With this number, I cannot use this inverter because of the fuses, yet it is required equipment so I must utilize it.
So, my question is this: If I put a recombiner on the inverter?s DC input with 14 inputs/outputs with 14x200A breakers, can I still utilize the 500kW inverter even though its? internal fuses do not meet NEC requirements?
500kW Inverter
- 1750A max dc current
- 14 inputs with 125A fuses
285W Panel
- 8.53A Isc
The fuses cannot be changed in this inverter. The typical current per input that I have would be roughly 110A, however when I size the inputs for oversized current according to the NEC, I obtain roughly 173A (8.53A x 13 strings/combinder box on said input x 1.25 x 1.25). With this number, I cannot use this inverter because of the fuses, yet it is required equipment so I must utilize it.
So, my question is this: If I put a recombiner on the inverter?s DC input with 14 inputs/outputs with 14x200A breakers, can I still utilize the 500kW inverter even though its? internal fuses do not meet NEC requirements?