Inverter and Battery capacity for washing machine

[Paul Land]

Yes I've heard kilowatt meters aren't very good at showing peaks. A generator is how I've been running my machine. Just enlarging my system for running a washing machine wouldn't be a good idea. But with winter I need to grow my system any way. Just wondering if anyone knew how large of inverter and battery I would need.

Is your washer Energy star or Power Hog. If Hog swap it out

[thastinger]

Would really need to know the HP rating of the WM motor. I have a 1HP well pump which, on 115 is supposed to be an 11.2A draw, that is 1100W. My little Yamaha 2000 will not start it, IIRC the max for the Yamaha is 1600W on startup.

[SunEagle]

Yes I've heard kilowatt meters aren't very good at showing peaks. A generator is how I've been running my machine. Just enlarging my system for running a washing machine wouldn't be a good idea. But with winter I need to grow my system any way. Just wondering if anyone knew how large of inverter and battery I would need.

It will really depend on what the motor of your washing machine requires to start up. A 1000w pure sine wave inverter should work but then again it may not.

[Ho jo]

Yes I've heard kilowatt meters aren't very good at showing peaks. A generator is how I've been running my machine. Just enlarging my system for running a washing machine wouldn't be a good idea. But with winter I need to grow my system any way. Just wondering if anyone knew how large of inverter and battery I would need.

[PNW_Steve]

I am not sure how you are measuring power consumption.

I have used the "kill-a-watt" meter and found that it works well for measuring overall consumption but does not give an accurate measure of "locked rotor current". The initial surge of current needed to start the motor.

I have a refrigerator that consumes less that 250 watts when running. I experimented with inverters and found that I needed a 1000 watt Xantrex to handle the startup.

IMHO: An occasional large load may be better supported by a generator rather than sizing your entire system for a once a week load.

[Mike90250]

I ran my washer in heavy load. kilowatt read 220 what hours 783 peak watts. On a 12 volts wouldn't a 1000 watt inverter and array be needed?

Most likely at LEAST a 1kw inverter. At 800w, the inverter will pull 66A from the battery. There may be a problem with an inverter not being able to supply the surge power needed to start the motor if the battery is less than 100% full

[Ho jo]

I ran my washer in heavy load. kilowatt read 220 what hours 783 peak watts. On a 12 volts wouldn't a 1000 watt inverter and array be needed?