I think you are making a lot of assumptions and many of them are wrong.
Be more than happy to learn which are assumptions and which of them are wrong and why.
But to continue diverging (which is an inescapable aspect of forum topics especially once the original question has been answered, and which to my mind adds interest AND information)
One of the reference sources for suitability is
http://www.electricblanketinstitute.com/heated-electric-blankets-with-inverters.html Heated Electric Blankets with Inverters
We often get asked about using heated electric blankets or heated electric mattress pads with inverters. It seems that many folks have experienced problems with them in their campers or their boats. People like to use electric blankets in their RV or boat instead of running their heaters or furnace because electric blankets and mattress pads are more energy and fuel efficient. Obviously it costs less to heat one's bed than their whole RV.
ALL heated electric blankets and mattress pads (and heated throws) bought for the United States market will function as well with FULL WAVE inverters as they do with shore power. However most brands will not work consistently with MODIFIED sine wave (MSW) inverters due to the type of control electronics they employ. Some electric blanket controllers have even been known to “fry” when connected to MSW inverters.
There is only one brand of electric blankets, electric mattress pads and electric throws that we have found to consistently test well with MSW inverters. It is the SoftHeat Low Voltage™ line of heated products from Perfect Fit Industries in Charlotte, NC.
Perfect Fit has been producing these Soft Heat Low Voltage products since around 2003 and they are very safe, work well and generally receive good reviews for their comfort and ease of care. For more complete information on these products, see our reviews of their blankets or their mattress pads.
but of course you will have to decide how reliable it is since I guess anyone can set up this sort of web site. They do review all brands so seems to be reasonably impartial. To electric blankets can be added all sorts of electrical appliances ranging for refrigerators down to cordless tool chargers where plugging them in for the first time can be a bit of a c r a p-shoot.
Of course the other reference source - sometimes also highly suspect and getting more suspect by the year - is myself. Professional Electrical Engineer in areas requiring expertise in heavy manufacturing, food and beverage production and packaging and high speed materials handling including an assortment of different control systems both analogue and digital - design, construction and maintenance. And I have built a couple of RVs from the chassis up, and used them for some years, as well as owned other manufactured RVs.
That MSW inverters don't cause more damage is as much due to the excellence of the appliance design as it is deficiencies in the inverter design, but even right back at the beginning, it was widely recognised that sophisticated appliances of that period were prone to failure. Laser printers were one such. Over the years the problem has waxed and waned, but as one group of appliances is either fixed or shunned by RVers, another will soon come along. The huge variety of inverters ranging from a few dollars to hundreds hasn't helped either.
http://forum.solar-electric.com/discussion/14984/what-appliances-will-not-work-with-modified-sine-wave-inverters has a couple of replies that are pretty representative if you ask the same question on many forums. Key point made is
In the end, probably 80% of the stuff you plug in will work fine, 10% will fail pretty quickly, and the other 10% it will be difficult to tell.
and nothing has changed over many years.
wa8yxm on this forum said
In addition MSW (Modified Sine Wave or Modified Square Wave) have a long list of things that MIGHT or might not work with them Radios, Epically AM Televisions (They are after all radios) Sat receivers (likewise) Audio amplifiers Clocks, timers and such Electric Blankets Coffee Pots (With electronic controls) microwaves Night LIghts (LED type, Incandascant work fine) And more.. the list is very long.
Yes, I could buy a PSW inverter, but all other things being equal, my choice is to buy a blanket that won't blow up if I power it from the inverter I have - which 16 years ago when the MH was built was fairly well regarded and is still going strong.
