Health & Safety Executive GS38 guidance note is aimed at people who use electrical test equipment on low voltage circuits. Institution (BSI) guidance and Health and Safety Executive (HSE) guidance Regulations lists HSE Guidance Note GS38 – Electrical test equipment. This is a free-to-download, web-friendly version of GS38 (First edition, published ). This version has been adapted for online use from HSE’s current printed.

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Specific requirements for test leads In line with changes made to the standards that cover the manufacture of test leads, there are some specific requirements that leads should comply with added in the fourth edition: Precautions before testing This section has been expanded upon to recognise additional test processes covered by the guidance note. Is this page useful? A – switch to normal size A – switch to large size A – switch to larger size.

HSE aims to reduce work-related death, injury and ill health. Gs83 it comes to buying new voltage detectors, you can be sure compliance with GS38 if the unit you are buying complies to BS EN This fourth edition includes current test equipment and references and links to further guidance have been updated. For loop impedance, RCD or multifunction testers, the fuse will typically be 10A.

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This has changed in the fourth edition, emphasising the importance of using test leads and test equipment that is suitable bse the category of the installation. Provided your existing equipment or leads meet either of the above there should be no need to replace anything until they need it. Only devices which make contact with the conductor ie not proximity devices should be used for proving dead.

For multimeters, fused leads should have a high-breaking capacity fuse hbc or hrc with a current rating that usually should not exceed mA.

However, non-contact or proximity devices can be useful in indicating if something is live, eg when attempting to remove a single cable installed in trunking containing many single cables. Risky business Vehicle safety hde farms Kidsafe: If your leads break during testing it can be easy to swap them for another set from a multimeter or clamp meter.


A brief guide Electricity at work: If you are unsure as to what test leads you need to use, speak to our technical team on This approach would derate the measuring equipment to the lower rating. Trusted by Professionals Search: The guidance has not fundamentally changed from the previous version.

Electrical test equipment for use on low voltage electrical systems

Safe working practices Memorandum of guidance on the Electricity at Work Regulation. As a general rule, GS38 states that any equipment or test leads that conform to BS EN or BS EN will meet the requirements and be compliant, provided you have taken into consideration the installation category.

Related products Electrical safety and you: Electrical test equipment for use on yse voltage electrical systems Date of publication: Gs8 fourth edition of GS38 makes two important points regarding the purchase of new equipment and the use of older equipment.

Examination of equipment The changes here are mainly with the wording, however this section does highlight the need to maintain regular checks of test equipment and that these should be carried out by a competent person. Firstly the Guidance Note has been amended to reflect relevant changes to the standard for two pole voltage indicators, BS EN The document provides advice and guidance on how to work safely and ensure the right jse is used and maintained properly. The Regulations permit few circumstances where it is acceptable for live working activities to be carried out on electrical equipment or systems, ys38 includes electrical testing and fault finding.

While it has fundamentally remained the same as the previous version, there are some key additions that could affect the way you test, or the equipment you are using.

Hse guidance note gs38:

We look at the key changes in the fourth edition, the full version of which can be downloaded at the end of this article. If you find you have leads or test equipment that no longer meet these requirements, or have been nse, it would be advisable to replace them to ensure your ongoing safety. Health and Safety Executive.

This includes electrical testing where dead tests gd38 often as effective as live measurements. See also Electrical safety at work Safe maintenance Risk management The health and safety toolbox – how to control risks at work.


Setting the multimeter to the wrong voltage range will lead to a false reading, but having it set to measure current or resistance can result in excessive current being drawn through the test probes, leads and multimeter. Whenever there are changes made to legislation and best practice, questions are often raised regarding existing equipment and whether it can still be used.

This standard, which came into full effect in Mayis the standard that all new two pole voltage indicators should comply with. General changes The guidance note has been amended to reflect the wide range of people who work on electrical systems, particularly those where electrical testing is not a primary activity such as gas installers and alarm installers. Skip to content Skip to navigation. You can visit our cookie privacy page for more information.

A final change regarding test leads relates to the use of fused leads. There are particular requirements for the use of non-contact devices in coalmines. Throughout this section, revisions have been made to include the need for ongoing risk assessments to ensure safety is maintained as well as re-emphasis of the need for selecting ga38 right CAT safety rating for the installation under test. A newly added paragraph touches on the importance or carrying out risk assessments, putting into place relevant safety measures and the use of appropriate PPE.

Such devices should be proved before and after use.

GS38 Fourth edition Download a free copy. Hes important point raised in the causes of accidents is the use of multimeters. Clarification of the different installation categories BS EN CAT ratings is included in the guidance note as a reference and a visual guide is available to download at the end of this article.

Updates regarding the causes of accidents This section has been expanded on to include additional issues that have been raised since the previous publication: This has a new paragraph added regarding the use of non-contact detectors, or volt sticks: Two key points have been added to the examples of common problems to look for: