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Wiring Matters Issue 96 - July 2023

Welcome to the July 2023 edition of Wiring Matters.

Setting a new IET Standard: Open Combined Protective and Neutral (PEN) Conductor Detection Devices (OPDDs) – OPDDs for use in electric vehicle charging applications for household and similar installations

The IET is delighted to announce this entirely new standard (also to be known as IET 01) which sets out the critical safety requirements for open PEN detection devices (OPDDs) for use in electric vehicle (EV) charging equipment and installations. This is a timely and necessary set of guidelines which aims to ensure that the highest safety considerations and requirements are met.

How voltage drop can affect EV charging point open PEN detection devices

A final circuit for an electric vehicle charging point (EVCP) may seem like any other final circuit – it is only a socket-outlet after all. However, there are some additional considerations, especially when the installation of such equipment incorporates an open PEN detection device (OPDD). This article looks at how voltage drop can affect the operation of OPDDs included within EVCPs.

Derating grouped circuit-breakers within a consumer unit due to mutual thermal influences

Have your say! Drafts for public comment coming soon

A number of IET publications are currently in development, with their drafts for public comment becoming available towards the end of the summer.

Updating of the IET Exam Preparation series for electricians seeking appropriate electro-technical qualification

The IET is pleased to announce upcoming revisions to our popular and well-received books for learners and practitioners seeking additional qualifications, Exam Preparation Requirements for Electrical Installations (2382) and Exam Preparation Initial and Periodic Electrical Inspection and Testing (2391), published by the IET and endorsed by City & Guilds.

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Wiring Matters Issue 96 July 2023 (pdf)