inverter
Motor homes with household refrigerators , what size inverter is used .
Just curious , pure sine wave necessary ?
Just curious , pure sine wave necessary ?
Forum Discussion
8 Replies
- What is weird is that MOST things in an RV will work just fine on a modified sine wave inverter. The things that usually give problems are the little things like a cell phone charger, digital clock, electric razor, etc. It is usually the small, inexpensive appliances that may not work well.
I agree with the others....buy a pure sine wave and then you won't have to worry about it. - Samsung refers use DC compressors so MSW are OK. Our 22 cuft draws 8 amps and works well on a 1000 PSW inverter. 2 batteries will run it 36+ hours before needing to recharge. Getting rid of the NoCold 1200 best mod ever.
- Ditto Larry. Our large Whirlpool shows 108 watts on a Kill-a-watt. Have not noticed a large startup current but it must be there? But when you open the door and the lights come on you'll see 300 or so watts. Looked at replacing the bulbs with LED's but bulb shape factor limits choices.
theoldwizard1 wrote:
Electronics (including your microwave) AND motors (refrigerators, A/C) run better on a pure sine wave inverter. "Better" means cooler as well as consuming less power.
The electronics industry has come a long way in the past 5-10 (?) when it comes to pure sine wave inverter technology. Ever since the Honda inverter generators came out other companies realized that it is not that difficult to make a pure sine wave inverter. (IMHO, Honda is still selling the new EU2200i for much too much ! Look at their competition.)
The reality is, a pure sine wave inverter of the same power as a modified sine wave inverter should not cost more than about $50 more. Most of the parts are the same between to two.- Electronics (including your microwave) AND motors (refrigerators, A/C) run better on a pure sine wave inverter. "Better" means cooler as well as consuming less power.
The electronics industry has come a long way in the past 5-10 (?) when it comes to pure sine wave inverter technology. Ever since the Honda inverter generators came out other companies realized that it is not that difficult to make a pure sine wave inverter.
The reality is, a pure sine wave inverter of the same power as a modified sine wave inverter should not cost more than about $50 more. Most of the parts are the same between to two. - Our residential frig pulls about 7 amps running. Our 2000w mod sine inverter runs it fine. No problem running or starting
- in most cases you need 1000w or so
It's not the running power, it is the compressor start power,
Just like A/C, only to a lessor amount
In the safari our residential fridge used about one amp at 120v when running
That measured at 9 amps at 12v
But the start up surge was over 900w
I installed the Tripplite PV1250, and it was flawless runs prefect
