How much should an inverter handle?

Bigger inverter.

 

Get the 5000w one and be done with it

 

bigger is better when it comes to inverters

 

2500w minimum.

 

Inverters shouldn't be just dying on you that quick.

Make sure you're using proper gauge, fuse and have it grounded properly.

2500 watt cobra should be fine for your needs.

 

Yeah don't run both the fridge and the rice cooker at the same time.

 

The problem is the RICE COOKER and the fridge running at the sametime

The rice cooker is using north of 1,000 watts. Most likely 1,200-1,400 add the fridge 350-450 watts staring the compressor and you are at the limit of what a 1,500 watt invertor can handle.

2 things you can do
1 unplug the fridge and idle when cooking
Or 2 get a bigger invertor

 

Stop buying truck stop junk inverters and get a good pure sine wave, 2500 watt or more. This is really the only way to handle it, the crap sold over the truck stop counter are usually modified sine wave and can't handle induction loads well. The induction load, like your rice cooker and even the motor in the fridge compressor, cause these to heat up and burn out quickly.

Make sure when you get your next inverter it is properly installed, using the correct size wire, otherwise this too will cause excessive heat strain on the circuitry and cause premature failure. Also make sure it is properly sized, add up the peak ratings of everything you intend to use at the same time and buy an inverter with at least that large of a rating, this way when everything is at max draw simultaneously the inverter is still capable of handling it without strain.

 

What size wiring are you using to supply the inverter?