NICEIC is working with industry partners (IET, ECA, Electrical Safety First, NAPIT and SELECT), and are reaching out to the industry for their help in the research of neutral current diversion (NCD).
NICEIC is working with industry partners (IET, ECA, Electrical Safety First, NAPIT and SELECT), and are reaching out to the industry for their help in the research of neutral current diversion (NCD). There’s not a lot of data available in the public domain, and that’s where you come in.
What is NCD?
In the event of a lost protective earthed neutral (PEN) conductor on a TN-C (PME) electrical supply, the installation loses its intended connection to neutral and earth. Current is then ‘diverted’ and will find its way back to the supply transformer any way it can. One common route is through shared metallic pipework, such as gas and water pipes.
How do I report neutral current diversion?
Should neutral current diversion be detected, we ask that you submit your findings.
Please use the QR code or visit response.questback.com/theiet/wipzxj3tay
You will be presented with several questions, including:
- What was the voltage/current that you measured?
- Did you call 105 to report the incident?
- What was the postcode of the installation?
What happens next?
The research period will run for six months, and the submissions will be reviewed. What happens next depends on what is uncovered. If there are many incidents in one area or countrywide, the Distribution Network Operator (DNO) will be alerted to the size of the problem. It may be that the group decides to inform the government should the findings indicate a problem wider than expected.
