|> | If you have a short, then wouldn't the inverter shutdown? The 60A or |> 70A |> | main is there to protect downstream wiring and devices from overcurrent, |> not |> | the power supply. |>
|> And that's what I want it to protect. |>
|>
|> | You seem to be saying you want a bigger inverter, capable of supplying a |> | higher fault current because you want to trip the main breaker. Why not |> | just have the correct size breaker on the inverter output? I suspect |> the |> | manufacturer already has that in their unit. Just because the main |> breaker |> | in your panel might not always trip before the inverter output, doesn't |> mean |> | you have less protection. |>
|> The main breaker is the example of what the inverter cannot deliver. The |> problem exists even for small branch breakers. Even a 20A breaker needs |> 100A fault current instantly to do a magnetic trip. |>
| | So, if the various breakers are designed to protect the downstream | components adequately, and the inverter is not capable of sending enough | current to trip the breaker, the inverter is not capable of sending enough | current to damage the downstream components. QED. | | If the inverter *is* capable of sending enough current to trip the breaker | on thermal trip (even if not the magnetic trip), then the thermal trip on | the breaker is able to protect the downstream components as it is designed | and you still don't have a problem. | | About the only thing that can be damaged by a mid-level fault that passes | more current than the inverter can supply, but not enough to trip the | breaker is the inverter. The downstream equipment is safe because it can | handle anything the breaker can pass, so since the breaker passes it, it's | safe.
So you think a short circuit should just sit there and not be opened.
Imagine the scenario of some child pulling a plug out half way and putting some metal object in between the prongs.