pd-- Senior Member Joined: 11/12/2020 Location: AustraliaPosts: 122
Posted: 07:25am 22 Sep 2023
One Toroid will easily do that , with forced cooling you could get 5kva out of one peek current would be more like 50A for 30>60 sec , its just dependent on the FETS in the inverter and battery assuming you do a 48v version.
There is nothing wrong in running a transformer worm especially in a cold damp environment.