How long was the extension cord between the inverter and fridge,
and what gauge?
With an electrical supply at its limits, you want short, heavy-gauge extensions to get
maximum voltage to the fridge.
Here's one of many voltage drop calculators: https://www.calculator.net/voltage-drop ... &x=49&y=18
For a 120V, 13A load and a distance of 100', voltage at the end of a 14ga cord would be about 113V,
and for a 10 ga cord it would be 117V.
Our Dewalt DXAEP1000 1000w inverter is rated for a 2000w surge.
It will start and run a fifteen year old fridge, and I can then plug in our chest freezer as well.
Very handy when the outer bands of hurricane winds knock out power in our rural area.
Power vehicle is a 1982 Toyota Diesel pickup with two 12V AGM batteries.
Our fifteen year old fridge pulls a steady 550w running, and
was around 1150w at startup, according to the meter on the inverter.
(Many meters don't read short-term surges well.)
How to build an adapter cable for use with a standard clamp ampmeter: https://www.instructables.com/id/CLAMP-THOSE-AMPS/
KillAWatt meters can be handy for longer term load evaluation: http://www.p3international.com/products/P4400.html
It would be nice to have a 240V inverter directly(and safely) connected in to an EV high voltage battery pack!
That could be enough to run our well pump.
Thanks and good health, Weogo