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Old 11-20-2021, 09:40 AM   #1
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Safety of Induction Cooktops

Shopping for a new stove. My wife and I are researching gas vs induction and want to replace our horrible electric-resistance range.

We've owned and enjoyed both gas and induction and have a single burner induction in our garage "wet kitchen" currently. But during my Googling I came across the below article, which I initially wrote off as being authored by some kook: https://emfacademy.com/induction-cooktop-radiation/

However, there was one passage which caught my attention:
The symptoms that people experience when exposed to EMF radiation are very real and can be felt by anyone, but particularly those that are more sensitive to the frequencies.

EMF radiation can cause nerve and tissue damage in the hands when exposed to over an extended period of time. It can also cause damage to other important systems within the body at high levels.

The pain and tingling sensation that you experience in your hand can progress into further damage if the issue is not addressed and protective measures aren’t put into place.

So there was an incident a couple years ago, boiling in a saucepan on the induction, and I put my finger in the water to feel the temperature, just briefly. Wasn't hot yet. However, I had a tingling and then slight numbness in my finger for days following.

Hence the reason for this thread. Wondering if anyone here has knowledge of this subject.
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Old 11-20-2021, 10:20 AM   #2
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Following this discussion. I have spec'ed an induction cooktop for my new build, so I need to know.

Your question sent me on a hunt. The short answer I find is, its fine but there are things you can do to improve safety: 1) rubber or other non-conductive handles on the pots and pans. 2) Don't use metal cooking utensils, to conduct energy from the dish into the body.

I guess it becomes like a lot of other things. Radar is fine but don't put your head tight against it when its on. Gas is fine but be alert to leaks and fumes. And so forth.

https://www.shieldyourbody.com/induc...ing_country=EU

https://apreparedkitchen.com/induction-cooking-safe/
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Old 11-20-2021, 10:32 AM   #3
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I think you're right @FWT. No need to be alarmist, just commonsense safety precautions, like having gas leak detectors.
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Old 11-20-2021, 11:52 AM   #4
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I have a portable counter top model that cautions use if anyone around it has a pacemaker.

John
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Old 11-20-2021, 12:07 PM   #5
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Haven't looked too far into this, but the article cited seems bogus.

"This means that when you touch the pan, you become part of the circuit. And the same EMF that heats the pan starts flowing through your body."

Clearly the author doesn't understand EMF if he/she thinks that touching something heated by EMF causes an electro-magnetic field to flow through your body. And if you are holding hands with somebody, it flows through their body as well? And on and on?

It appears that there was a study that found this mystery flowing effect, but it has never been replicated. Also, if you worry about the health effects of invisible magnetic fields flowing 24/7, don't think about your boat's compass. Or the electro-magnetic pulses generated (and received) by your VHF.

My safety regimen is to not sit on an induction burner when I For you kids, Geritol was taken off the market in the 1970's after an F.T.C. order.
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Old 11-20-2021, 12:16 PM   #6
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Originally Posted by johnrupp View Post
I have a portable counter top model that cautions use if anyone around it has a pacemaker.

John
Seems to me household microwaves carry the same caution. Which we all ignore like the warning tags on new pillows.
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Old 11-20-2021, 02:04 PM   #7
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The induction field follows the inverse square law. The field is distorted by conductors. Same for light, microwave or SSB. And it’s not a focused beam like laser or radar. Hence distance creates safety. With microwaves there’s material in the door and box so your exposure is minuscule and proper use isn’t a health risk. Would think with extensive use and especially misuse conduction cooking could present a risk. However, with a minimum of attention and good habits wouldn’t get overwrought. Still, putting a pot to boil then walking away means trivial exposure and doing a stir fry means more but you’re not a professional chef in front of thing all day.
Understand there’s a logic to not wanting multiple different fuels on a boat. To date been stuck with diesel, petrol and propane. However don’t like induction as a sole mechanism to cook. Between the grill, microwave, hot plate and stove have redundancy. Also don’t like using anymore electrons than I have to. Down stream requirements for batteries and production doesn’t appeal. At anchor prefer good ventilation so less AC, having panels sufficient for daily needs and fewer genset runs.
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Old 11-20-2021, 02:47 PM   #8
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Electromagnetic radiation is all around us. Radiation has three effects: 1) surface warming (jiggling of atoms/molecules), 2) ionizing molecules (knocking off electrons) and 3) magnetic induction (inducing eddy currents).

Radiation is quantized (photons). Below ultraviolet, radiation only warms by jiggling molecules (e.g. microwave, radar) or inducing eddy currents. Ultraviolet and above (e.g. Xrays, cosmic rays) will ionize tissue, i.e. may potentially damage cells and DNA. That is the primary concern with radiation.

The energy of radiation (photon) is proportional to its frequency. Light and above is very high frequency (10^15 Hz), utility power very low (60/50Hz), i.e. 15 orders of magnitude lower. It takes a certain level of energy for a photon (>10^15 Hz) to knock off an electron. Quantity of photons does not matter.

Induction at 60 Hz is completely harmless as long as you do not touch hot metal. E.g. there are a lot of photons but of very low energy. Induction heating works by inducing eddy currents into the object to be heated. Dissipation of the eddy currents creates the heating of the pot. You can hold your hand above an induction burner and will feel nothing.
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Old 11-20-2021, 04:08 PM   #9
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We have an induction cooktop and a steam oven, and no problems with either ever.
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Old 11-21-2021, 06:32 PM   #10
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Quote:
Originally Posted by Marco Flamingo View Post
Haven't looked too far into this, but the article cited seems bogus.

"This means that when you touch the pan, you become part of the circuit. And the same EMF that heats the pan starts flowing through your body."

Clearly the author doesn't understand EMF if he/she thinks that touching something heated by EMF causes an electro-magnetic field to flow through your body. And if you are holding hands with somebody, it flows through their body as well? And on and on?

It appears that there was a study that found this mystery flowing effect, but it has never been replicated. Also, if you worry about the health effects of invisible magnetic fields flowing 24/7, don't think about your boat's compass. Or the electro-magnetic pulses generated (and received) by your VHF.

My safety regimen is to not sit on an induction burner when I For you kids, Geritol was taken off the market in the 1970's after an F.T.C. order.
Thanks Marco and very well said. That dude needs to worry about the antenna in his cell phone a lot more than an inductive coil in a cooktop.
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Old 11-21-2021, 07:14 PM   #11
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Greetings,
Do NOT look into the laser with your remaining good eye!


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Old 11-21-2021, 09:14 PM   #12
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My wife just received a pair of Asics tennis shoes that she ordered online. It came with a warning label “Not to be worn in extreme heat.” I’m dead serious. We live in FL. I’ll take my chances with induction.
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Old 11-21-2021, 10:20 PM   #13
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Mako - Don't know how big your boat is, but Wallas makes an interesting "induction-style" diesel cooktop/heater:

https://scanmarineusa.com/products/s...-stove-heater/

Know a guy that has one on a Taiwan 32-foot trawler. He loves it for both heating and cooking (and a single fuel source).
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Old 11-22-2021, 06:32 AM   #14
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Looks like a wonderful design but has nothing to do with induction.
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Old 11-22-2021, 07:00 AM   #15
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Well I reminded my wife that although induction cooktops are safe, we still need to be careful like with anything else. Stay a foot away (which is a normal cooking distance anyway), don't grab the metal handle of a pot (they're hot anyway)... but use wood or plastic utensils. That's probably the only thing different.

However, it did freak me out when I had that tingling in my finger for several days after dipping into the water. It's like I was cooking my finger from the inside.

Kids, don't try this at home
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Old 11-22-2021, 07:04 AM   #16
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This thread fundamentally is about relative risk
From wiki
The relative risk (RR) or risk ratio is the ratio of the probability of an outcome in an exposed group to the probability of an outcome in an unexposed group. Together with risk difference and odds ratio, relative risk measures the association between the exposure and the outcome.


Lack of appreciation that being alive engenders risk has lead to marked distortions of our society. This has resulted in varied and absurd outcomes. My opinion with examples told to me. My local town HS hockey team bought helmets at 1/2 price from Canada due to product liability expenses included in the US licensed helmets. Same exact helmets but the team was not allowed to use them after a parent saw the absence of the US licensure. Tort Med mal is so pervasive in Arkansas that physicians choose to practice elsewhere. Pantaenius divides into two companies. One the world, the other the US in a unsuccessful attempt to limit liability exposure. Then basically withdraws from the US market.
Due to the public being unaccepting life carries risk soft costs for any productive activity be it manufacturing, service or construction increasingly places a cost burden on society. Yes the legal industry benefits and our politics is distorted. RR death from vaccination is ~ 1 in 4m. Attributable risk from induction cooking is negligible. But off we go. If presented in simple terms what the RR is for certain activities the huge drain of exorbitant soft costs could be curtailed. If you take this you risk is X. If you don’t your risk is Y. If you use this your risk is X. The risk in non users is Y. In my life I’ve ridden motorcycles, rock climbed, ocean sailed, skied, and enjoyed. It’s my personal responsibility to judge if risk/benefit is worth it. End of rant.
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Old 11-22-2021, 10:39 AM   #17
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@Hippo, appreciate your rant as your posts are always quite interesting

Yes, we will continue to use our single induction cooktop, but still not sure if we'd go full-electrical on the main stove.

In any case, if you or someone else here would like to help out, please stick your finger in a pot of water (before it gets too hot) and let me know if anyone experiences the "tingling finger" sensation.
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Old 11-22-2021, 11:19 AM   #18
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Greetings,
Mr. M. https://www.walmart.com/ip/Electroma...9&gclsrc=3p.ds


Throw it into a plastic bag. Put in pot of water. Turn power off and on...
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Old 11-22-2021, 11:46 AM   #19
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RT,

Your experiment reminded me of a YouTube video where somebody was showing the distance at which EMF could be detected from an induction burner. They laid a tape measure from the center of the burner and moved the meter along it's length, detecting EMF more than a foot away before it got weak. Yes, but they were moving the meter when held against a steel tape measure laying across the burner. What would be the result using a wooden yard stick? They didn't try that. And of course the meter never went to zero, as there is always ambient EMF (and maybe the house had WiFi).

Do you want induction to be safe or deadly. I can prove either.
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Old 11-22-2021, 01:15 PM   #20
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Greetings,
Mr. MF. I admit I was being, just a tad, facetious....That "device" can also be used for detecting paranormal forces as well.


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