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Average Exposure from Common Appliances

This page has some figures for average exposure levels to Extremely Low Frequency (ELF) Magnetic Fields from some selected common household appliances.

First of all, let's remember that because a mechanism of action has not been established, relying on magnetic-field levels only in an attempt to protect yourself, might give you a FALSE SENSE OF SECURITY. These figures also neglect other emissions at different frequencies, (relevant to VDTs) and electric fields.

But even given the unknowns, a gross representation of magnetic field strength might at least allow us to:

  1. arrange our homes so we spend less time near high-current appliances,
  2. moderate or curtail the use of some appliances we feel may not be justified,
  3. just get a better overview of where the fields in our homes come from.
Remember that magnetic fields come from moving electric current, so the more current your appliance uses, the greater the magnetic field; for a given line voltage, (ie: 120 VAC), the greater the power in WATTS, the greater the current, and the resulting magnetic field. Even small electric motors are big magnetic field sources.

The following table is populated with data that orignated from the IEEE [1]

Magnetic Field in Milligauss
ApplianceAt 4 inches
(10 cm)
At 1 foot
(30 cm)
At 3 feet
(1 m)
Blenders50 - 2205.2 - 170.3 - 1.1
Can openers1300 - 400031 - 2800.5 - 7.0
Clothes dryers4.8 - 1101.5 - 290.1 - 1
Clothes washers2.3 - 30.8 - 3.00.2 - 0.48
Coffee makers6 - 290.9 - 1.2<0.1
Crock pots8 - 230.8 - 1.3<0.1
Drills350 - 50022 - 310.8 - 2.0
Electric shavers14.0 - 16000.8 - 90<0.1 - 3.3
Faust blowers3 - 1200.25 - 37<0.1 - 3.1
Flourescent desk lamps100 - 2006 - 200.2 - 2.1
Flourescent fixtures40 - 1232 - 32<0.1 - 2.8
Hair dryers3 - 1400<0.1 - 70<0.1 - 2.8
Irons12 - 451.2 - 3.10.1 - 0.2
Mixers58 - 14005 - 1000.15 - 2.0
Portable heaters11 - 2801.5 - 400.1 - 2.5
Sabre and circular saws200 - 21009 - 2100.2 to 10.0
Televisions4.8 - 1000.4 - 20<0.1 - 1.5
Toasters10 - 600.6 - 7.0<0.1 - 0.11
Vacuum cleaners230 - 130020 - 1801.2 - 18.0


Anecdotally, I have an electric stove with an 1800 WATT quick-heating burner. These are the measurements I have made on this one burner:

Magnetic Field in Milligauss
ApplianceAt 6 inches
(15 cm)
At 1 foot
(30 cm)
At 3 feet
(1 m)
Electric stove
(one burner)
100
9<1


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Refrences

(Use the BACK button on your browser to return to the citation you came from.)
  1. Guager, Jr, Household Appliance Magnetic Field Survey IEEE transactions on power apparatus and systems, PA-104 (Spet. 1985), quoted from "Warning: The Electricity Around You May Be Hazardous to Your Health", Sugarman, Ellen, ©1992 Simon & Shuster


Last updated 2-12-97