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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Provided your existing equipment or leads meet either of the above there should be no need to replace anything until they need it.

However, if those leads are not rated to the same category as your installation, you could be putting yourself at risk. This approach would derate the measuring equipment to the lower rating.

Hse guidance note gs38:

HSE aims to reduce work-related death, injury and ill health. When it comes to proving dead this has always been advised against by Electrical Safety First previously the Electrical Safety Council. There are particular requirements for the use of non-contact devices in coalmines.

For existing leads and equipment predating these standards, or manufactured to a different standard, GS38 states they must be maintained to prevent danger and should comply with the guidance probes and clips in paragraph 9 download the full guidance note below.

The Regulations permit few circumstances where it is acceptable for live working activities to be carried out on electrical equipment or systems, this includes electrical testing and fault finding.

This should be done preferably on a voltage proving unit some devices have built-in proving units or otherwise on a known live source of similar voltage to the circuit under test providing precautions are taken to prevent danger arising. This has a new paragraph added regarding the use of non-contact detectors, or volt sticks: A – switch to normal size A – switch to large size A – switch to larger size. Two key points have been added to the examples of common problems to look for: For multimeters, fused leads should have a high-breaking capacity fuse hbc or hrc with a current rating that usually should not exceed mA.

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HSE GS38 Fourth Edition – What you need to know to stay compliant

This fourth edition includes current test equipment and references and links to further guidance have been updated.

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. An important point raised in the causes of accidents is the use of multimeters. Trusted by Professionals Search: Updates regarding the causes of accidents This section has been expanded on to include additional issues that have been raised since the previous publication: Firstly the Guidance Note has been amended to reflect relevant changes to the standard for two pole voltage indicators, BS EN Is this page useful?

A final change regarding test leads relates to the use of fused leads. See also Electrical safety at work Safe maintenance Risk management The health and safety toolbox – how to control risks at work. For loop impedance, RCD or multifunction testers, the fuse will typically be 10A.

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Related products Electrical safety and you: A footnote has been added to clarify hsw live working is defined as any testing or fault finding on live systems. Electrical test equipment for use on low voltage electrical systems Date of publication: This standard, which came into full effect in Mayis the standard that all new two pole voltage indicators should comply with.

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This has changed in the fourth edition, emphasising the importance of using test leads and test equipment that is suitable for the category of the hze. Skip to content Skip to navigation. If you are unsure as to what test leads you need to use, speak to our ga38 team on This is an important safety issue as using equipment that is not correctly rated for the installation category can and has resulted in serious injury and death. Whenever there are changes made to legislation and best practice, questions are often raised regarding existing equipment and whether it can still be used.

We fs38 at the key changes in the fourth edition, the full version of which can be downloaded at the end of this article.

Electrical test equipment for use on low voltage electrical systems

This section has some in-depth points regarding correct equipment selection. Such devices should be proved before and after use.

This includes electrical testing where dead tests are often as effective as live measurements. The fourth edition of GS38 makes two important points regarding the purchase of new equipment and the use of older equipment.

Other changes include the use of proving units, non-contact voltage detectors and installation category ratings. 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.