This page is intended as a convenient entry-point for National Grid staff to find relevant information.
If you are a member of the public who has found your way here: that's no problem, there is nothing confidential on this page, but you may find it more useful to start from our home page.
National Grid ensures your safety by complying with the relevant exposure limits (which are specified in Regulations that came into force 2016). We set out the full details of this on a separate page.
We have assessed all National Grid plant and work practices to make sure they comply with the limits. Where necessary, we have put in place restrictions to ensure compliance. So you can go about your work without having to perform specific risk assessments about EMFs - the risk assessment has been performed centrally.
That applies to staff in general. If you have an "Active Medical Device" (a pacemaker, defibrillator, cochlear implant, insulin pump, etc) you must inform us (through your line manager or occupational health) so that we can assess whether there is a risk of interference.
And if you are pregnant, you have the option to comply with the lower general-public exposure limits - see full details.
EMF_The_Facts_250917 - our main booklet on EMFs for members of the public.
Interfacing with the public
If your job involves interfacing with the public, you may get asked EMF questions by them. Feel free to refer any questions to the EMF Helpline. But you may also find the following helpful:
Microshocks guidance note - a two-pager specifically about microshocks, aimed to help prepare National Grid staff for conversations with members of the public
Interference with GPS and farming - a page about possible interference issues with precision agriculture