Sterling Quasi wave inverter

[Itsmcb]

I am looking at the 1800w version. Does anyone have one, does it really run almost anything? (within the power limits)
I want to move away from reliance on EHU however the chief cook insists that the microwave (and TV) are non-negotiable.

 

[pappajohn]

I wouldn't run anything electronic on a non-pure wave inverter.

 

[Itsmcb]

I wouldn't run anything electronic on a non-pure wave inverter.

Can you recommend one that will run a basic 700watt (output) mechanical timer microwave for just a few minutes a couple of times a day without splashing out £450 on a Victron 1200watt one, assuming that's even powerful enough?

 

[Lenny HB]

The Victron one is 1200VA about 1000 watts, it would probably handle the microwave as they are quite good at handling peak surges if going for a cheaper one get a 1500 watt.

 

[Al-Di]

we have this and its been great 4 years now, does what your asking,

2000W (4000W Peak) DC 12V AC 240V PURE SINE WAVE POWER INVERTER coffee machine | eBay

2000W Pure Sine Wave power inverter. - Pure sine wave output waveform: clean power for sensitive loads. Output Waveform. Pure Sine Wave. Peak Power. - Input & output fully isolated. NOW INCLUDES REMOTE LCD WITH ON/OFF BUTTON.

www.ebay.co.uk

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[Itsmcb]

Cheers guys, I've found a reasonably priced 1500 watt one on Amazon which I'm going to try. If it's used more than I suspect I will upgrade. And if it doesn't work I can return it

 

[Stanbrook]

This is a 250quid Amazon pure sine wave inverter, brand new today. Powering a 900w microwave via 2xvarta ldf90s. It smashes the hell out of them. Everything gets hot, cables carrying 110A, current shunt, isolator switches... Bad news. If you are going to use a microwave.... Beef everything up or expect a toasted motorhome.

 

[Itsmcb]

So yesterday Amazon delivered the inverter. Somehow I managed to order a 24v one so its on its way back this morning. My wife is now exploring alternatives to microwave use so I may have inadvertently saved myself £200.

 

[jezport]

I motorhome because I like to chill and not rush. Microwaves are for home and caravans and people in a hurry.

 

[autorouter]

In a motorhome, inverters are best used for high power in short bursts, like a microwave or hairdryer, and switched off when not actually being used. You need to think about the battery power, and maybe solar power to refill the batteries.

You should be aware of the power limitations of a motorhome battery. A 100Ah 12V battery contains 100 x12= 1200Wh of energy. For most batteries only a fraction of that (50% to 80%) is actually usable. A 1000W inverter will use that up very quickly.

The other consideration is the amps drawn from the battery. a 1000W load will draw at least 1000/12 = 83 amps from the 12V batteries. The maximum recommended is about a fifth of the Ah capacity, so for a 100Ah battery that's 20A. If you add a second battery that takes it up to 40A.

Having said that, many people run a 1000W inverter from 2 batteries and are happy with the results. For short bursts of power it seems OK.

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[Richard n Ann]

The maximum recommended is about a fifth of the Ah capacity, so for a 100Ah battery that's 20A.

Is that for Gels? I know gels are less because the plates can't dissipate the heat as quickly.

 

[PeterCarole29]

I cant recommend a cheap alternative for inverter but for cooking low watts we find the remoska very good

 

[dipsie]

We use our microwave a lot, it is useful as a bread cupboard !
The “ roundabout “ thing’y has been in it for the last two years.

 

[autorouter]

Is that for Gels? I know gels are less because the plates can't dissipate the heat as quickly

'About a fifth' is a rough approximation, different types have different tolerances. Dual-purpose (leisure & starter) batteries are better for high amps, gels are about the worst.