Association of residential magnetic fields with contact voltage

Bioelectromagnetics
R KavetJohn Dallapiazza

Abstract

The US National Electrical Code's (NEC) requirement to ground a home's electrical service to the residential water line results in a voltage between the water line and earth, V W-E. The voltage may result from ground return current that flows into the earth via the water line or from inductive effects from other sources of magnetic fields, such as transmission lines. This voltage can, in turn, serve as a source for Vbath, the voltage between the water fixtures and conductive drain pipes sunk into the earth beneath a residence. Vbath can be a source of contact current exposure to a child touching a water fixture while bathing. Previous research has suggested that exposure to these currents could be the basis for the association between power-frequency magnetic fields and childhood leukemia. In this study, we assessed the association between measured Vbath and VW-E with the average spot-measured magnetic field, Bavg, in a sample of 191 single-family residences in the Denver metropolitan area. This area was the source of cases and controls for previous studies of electric and magnetic field (EMF) and childhood cancer. The association of both Vbath and VW-E with Bavg had upward trends across magnetic field strata (<0.1 microT (refe...Continue Reading

References

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Citations

Jul 23, 2005·Bioelectromagnetics·Robert Kavet
May 25, 2006·Journal of Occupational and Environmental Hygiene·Joseph BowmanRob Kavet
Dec 12, 2012·Reproduction : the Official Journal of the Society for the Study of Fertility·Craig B Park, Daniel Dufort
Aug 4, 2006·Reproduction : the Official Journal of the Society for the Study of Fertility·Rebecca L JonesLois A Salamonsen
Nov 8, 2008·American Journal of Epidemiology·Anke HussUNKNOWN Swiss National Cohort Study
Jul 12, 2008·Bioelectromagnetics·Robert KavetRobert M Patterson
Feb 24, 2006·Radiation Research·Angela M Sommer, Alexander Lerchl
Mar 11, 2011·Radiation Research·Monique DoesPatricia Buffler

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