How do I calculate available power from a 230v generator to a 12v system?

Question

question

slo0079 asked Dec 12, '23

Per query above, I'm trying to size a generator. Options are 2200w or 3200w 230v units. What current can I get at 12-13v?

Generator

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Answer 1 · 2023-12-13T03:12:00Z

snoobler answered · Dec 13, 2023 at 03:12 AM

(2200W / 12-13V) *.85 (inefficiency)

1

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

kevgermany ♦♦ commented · Dec 13, 2023 at 04:51 AM

For those when it's not clear.

I misread 12-13V. Which is -1V.

It's a range so do two calcs, one with 12V, one with 13V.

1 ·

Answer 2 · 2023-12-13T10:45:12Z

Michelle Konzack answered · Dec 13, 2023 at 10:45 AM

Do not overload a Generator by running it on its rated power. The Generator will wear off in lightspeed.

If you have a Generator with 2200W continious power, the load should not exceed 2/3, hence 1450W.

This mean, your charger should not have more then 100A charging output @12V.

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.