EMFields Logo 
Current office time: 03:22:55
We ship worldwide - please see Stockists
Office hours: 9:00-17:00 hrs (UK) Mon-Fri
Your basket Welcome, guest

Your basket is currently empty
[Skip to content]

Welcome to EMFields - Electromagnetic fields (EMF) solutions

Alert message Cookies

Most modern web sites use cookies to aid functionality. A EU and UK law passed in 2011 requires web site owners to inform their customers about their cookie use.

The EMFields website uses cookies to ensure the best user experience. Disabling the cookies for this site will prevent any of the basket functions from working. For more details on exactly what cookies we use and the information they hold, please read our cookies policy.

» Hide this message (hidden for 6 months)

Overhead power lines

PowerlinesUnless you have a large high voltage overhead powerline crossing your property, it's unlikely that you'll find elevated exposure levels from powerlines. It is generally only caused by 400 kV, 275 kV and 132 kV lines in close proximity to the house in question.

The cables from high voltage overhead powerlines produce powerfrequency EMFs. As a rule of thumb, the bigger the pylons, the higher the voltage, and the further the EMFs extend from the cables. 132kV lines can carry voltage very differently on the 2 sides of the middle cable, this creates higher fields than you might think.

In some urban areas, power cables can be routed above, or along the wall of a building. These will generate high fields within the room(s) they are next to, even though they are low voltage cables.

If you have a visible overhead power line within 100 metres of your property however you may well want to measure exposure in your house and garden to make sure.

EMFields PF5
EMFields PF5

The best way to check power frequency exposure levels (caused by the distribution and use of electricity) is to use a suitable instrument such as an EMFields PF5 meter, which measures both electric and magnetic fields. You can also buy another, cheaper (but still highly accurate) alternative such as the MagneMeter, which measures magnetic fields only, but these are the fields which have been researched the most with respect to health effects.


[Back to the homepage]

We sell instruments to measure electromagnetic field exposure from sources such as electricity substations and transformers, powerlines and mobile phone masts, and offer a number of protective shielding solutions for those who find themselves highly exposed. We also provide a list of some EMF Surveyors on our surveys website.

Alert message Customer Service

We have designed all of our own instruments which are manufactured in the UK and have a 2-year return-to-base warranty. We are able to zero-rate UK VAT on certain items, if you have selected that you are Electrically Hypersensitive in your profile.

We can ship most of our products world-wide.

This page has links to content that requires a .pdf reader such as Adobe Adobe Acrobat Reader