| Re: [GMCnet] Induction cooktop run off an inverter [message #325077 is a reply to message #325070] |
Tue, 17 October 2017 21:05   |
Richard Denney
Messages: 920
Registered: April 2010
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Senior Member |
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It's the waveform put out by most inverters that causes the problem. An
induction cooktop induces electrical currents in the metal of the pan, and
the electromagnetic field it creates to do that requires a clean sine wave,
so that currents and voltages are constantly and smoothly changing rather
than jumping in steps. It should work with a true sine-wave inverter. That
would let out my generator, which uses a dedicated inverter that is
probably not a sufficiently pure sine wave.
Rick "sticking with propane" Denney
On Tue, Oct 17, 2017 at 7:07 PM GENE KNUEPPEL wrote:
> Hi Jerry I am an ex truck driver and have used inverters of every size to
> power my 110v stuff I went to 110 after going through loads of 12v things
> got tired of burning up coffee pots the inverter opened up a whole new
> world with me living on the road when my wife and me saw the advertisement
> for the NU WAVE induction cook top I thought this would work great so we
> got the deal for two of them when we got them we tried it at home and it
> works like a dream but when I put the other one on the truck it would not
> work so I got a bigger inverter still nothing I then got the other one from
> home and tried it still nothing so I called the company and asked them
> about it and was told that because of the way they are made that they will
> not work with inverters the nu wave is only1300 watts and I was pushing it
> with 2500 and 3000 watt inverters so it must be something with the
> circuitry
>
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> On Tue, Oct 17, 2017 at 7:36 PM, Gerald Work wrote:
>
>> All good points and I am well versed in the arithmetic involved with
>> batteries and inverters. This Prevost, like many current high end
> coaches,
>> is an all electric coach with 1850 ah of AGM batteries. All the
> appliances
>> are residential devices. There is no propane on board although I do
> carry a
>> small bottle to power the propane fire pit and the BBQ.
>>
>> The appeal of induction cooktops, and why they are common on new coaches,
>> is they heat food very quickly while imparting far less heat into the
>> interior of the coach so it stays cool unlike cooking with propane or
>> resistance. Those same traits are why they are so popular in other
>> countries around the world and are becoming more common in residential
>> applications here as well.
>>
>> The fast cooking means the inverter, while drawing substantial power,
> only
>> does do for a short period of time - a few minutes for most applications.
>> Very much the same arithmetic as powering a microwave from an inverter
> which
>> many motorhomer's do from far smaller battery
>> banks.
>>
>> Yes, turning on the 17500 watt generator is an option, and what I would
> do
>> for extended cooking applications, but I also want to explore the
> inverter
>> option for quick use. Hence looking for anyone who has experience doing
> so.
>>
>> Thanks for the input.
>>
>> Jerry Work
>> Kerby, OR
>> .......
>> rom: Jim Miller
>> To: gmclist@list.gmcnet.org
>> Subject: Re: [GMCnet] Induction cooktop run off an inverter
>> Message-ID:
>> Content-Type: text/plain; charset=utf-8
>>
>> On Oct 17, 2017, at 7:02 PM, John Yurtinus wrote:
>>
>>> This is one thing I never quite got. What's the allure of an induction
>> cooktop in an RV? I don't see any advantage over propane and a whole lot
> of
>> drawbacks.
>>
>> Hi John,
>>
>> I am usually a lurker on GMCnet and only pipe up occasionally. I, too, am
>> interested in the reasoning behind using any electrical cooking method
> in a
>> GMC be it inductive or resistive - but even more so I was wondering why
> one
>> would even consider running it from an inverter.
>>
>> Like solar panels and wind turbines, these inverters seem to have some
>> magical Star Wars light-saber allure and end up getting used for all the
>> wrong reasons. Unfortunately the EE concepts of P=IE and P=I^2R (re
>> conductor loss) are usually ignored on the inverter setups and result in
>> installations that are either marginal in performance or are outright
>> dangerous.
>>
>> I guess if one has an unlimited supply of DC then drawing 12V @ 200 amps
>> for a half hour while cooking dinner is OK..but why not just use propane?
>> Or, if you really must have electrical cooking - start the genset for a
> bit?
>>
>> Sign me ?baffled?...
>> ?Jim
>>
>> Jim Miller
>> 1977 Eleganza
>> 1977 Royale
>> Hamilton, OH
>> ......:
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--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
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