Field strengths in the vicinity of electrical devices and systems

The table describes the electro magnetic 50Hz field in the vicinity of electrical devices and systems

Devices and facilities Magnetic flux density
in microtesla (µT)
Electric field strength
in volt/meter (V/m)
Distance
5cm
Distance
30cm
Distance
50cm
Distance
5cm
Distance
30cm
Extractor hood in company 55 2 0.2 0*  
Aquarium pump 25 0.15 >0.1 100 20
Flat iron 20 0.4 0.05 0* 120
Electric cooker with hotplates 200 8 1 5 0*
Electric cooker with ceramic hob 0.9 0.6 0.5 78 30
Electric shaver 78 2 0.1 230 80
Energy-saving lamp 0.5 0.05 0.15 100 50
Hairdryer 1500 8 3.5 230 100
Underfloor heating mat 10        
Underfloor heating bifilar 0.5        
Dishwasher in company 20 2.5 1 0*  
bulb  0.5 0.01 0.005  200  5
Halogen lamp Low-voltage  <70  1 0.1  5*  50
Handle drill  800  20 4  200**  
Handheld electric mixer  600  10 1  200**  100
Electric blanket  30      5*  100
Heater blower 0.5 0.2 0.1  0*  100
Coffee machine  10 0.1 <0.1  0*  100
Fridge  2 0.4 0.2    
Lamps mobile wrong poled  0 0 0 200 80
Lamps correct poled  0 0 0 20 5
Microwave  40  20  4.5 5 0*
Night storage heating      2.5    
Sewing machine  <0.5 0.2 0.1 200 50
Clock radio  80  0.4  0.1 200 80
Hoover  70 0.38 0.1   100
Stereo system  <10 5 <0.5   200
Telephone electronic
network terminal
0 0 0 150 50
Toaster 20 1 0.3 0* 100
TV flat screen 0 bis 1 0 bis 0.5 0 bis 0.2 0 bis 200 0 bis 20
TV CRT 50 2 0.05   100
TV/PC Standby 0.2 <0.1 <0.05 100 20
Washing machine / tumbler <10 2 1 0*  

Notes:
Measurement values without star: floating / unearthed
Measurement values with star *: earthed

Source: Measurements IBES, Swiss institute for biological electrical engineering, 2001. The measured values are product dependent

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