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Electric and Magnetic fields
All electricity produces electric and magnetic fields (EMF) and our transmission lines are no different. Some people have concerns surrounding the perceived health effects of EMF exposure, and numerous studies have been undertaken internationally on the subject.
We’ve put together five fact sheets to help you understand EMF a little more:
- Fact Sheet 1: Electric and Magnetic Fields and Transpower
- Fact Sheet 2: The Nature of Electric and Magnetic Fields
- Fact Sheet 3: Electric and Magnetic Field Strengths
- Fact Sheet 4: Safety Guidelines for Electrical and Magnetic Fields*
- Fact Sheet 5: Health Effects and Electric and Magnetic Fields
- Electric and Magnetic Fields from Underground Transmission Cabling
Also please have a look at the Safety and EMF Poster
We also have a commitment on how we manage EMF in operating our assets.
If you have concerns over EMF levels from one of our lines over your land, please contact us directly to discuss.
*The National Policy Statement and National Environmental Standard on Electricity Transmission are instruments under the Resource Management Act to manage the environmental effects associated with electricity transmission. These apply the 1998 EMF health protection guidelines of the International Commission on Non-Ionizing Radiation Protection (ICNIRP) to manage EMF associated with transmission lines. The ICNIRP re-issued their guidelines in 2010, revising the public exposure limit for magnetic field from 100 to 200 µT (micro tesla) and NZ Ministry of Health recommend the revised limit. However the 1998 guidelines apply to electricity transmission until the above RMA instruments are revised by the Ministry for the Environment.
