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What are the main contributions to peoples exposure to ELF (power frequency) EMF?

April 26, 2017contributions Elf EMF exposure Frequency main people power

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What are the main contributions to peoples exposure to ELF (power frequency) EMF?

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The main sources of power frequency electromagnetic fields are related to the transmission, distribution and use of electricity. Transmission power lines in the UK operate principally at 400 kilovolts (kV) and 275 kV, and distribution lines operate at 132 kV, 66 kV, 33 kV, 11 kV and 400 V. Underground cables and substations can also be sources of exposure. Away from power lines, power frequency EMF in homes arise from currents and voltages associated with distribution circuits and household electrical wiring, and the use of appliances. The strength of EMF tends to fall rapidly with distance. The relative contribution of these sources to residential exposure in the UK is variable and depends on individual home circumstances. Power frequency EMF are also produced from the use of electricity in the workplace and from electrified transport systems.