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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hse guidance note gs38

Risky business Vehicle safety on farms Kidsafe: There are several points highlighted here that should be considered closely when it comes to test equipment selection. An important point raised in the causes of accidents is the use of multimeters. These regular references to CAT safety ratings in the fourth edition of GS38 highlight the importance of ensuring that you have the right equipment and test leads for the job. However, if those leads are not rated to the same category as your installation, you could be putting yourself at risk.

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. 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 the right CAT safety rating for the installation under test.

A brief guide Electricity at work: This use be done preferably on a voltage proving unit some devices have built-in proving units or otherwise gs3 a known live source of similar voltage to the circuit under test ys38 precautions are taken to prevent danger arising.

Hze 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 gx38 9 download the full guidance note below.


HSE GS38 compliant tip caps

This approach would derate the measuring equipment to the lower rating. HSE aims to reduce work-related death, injury and ill health. A final change regarding test leads relates to the use of fused leads.

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: Electrical test hs for use on low voltage electrical systems Date of publication: For multimeters, fused leads should have a high-breaking capacity fuse hbc or hrc with a current rating that usually should not exceed mA.

Precautions before testing This section has been expanded upon to recognise additional test processes covered by the guidance note. This includes electrical testing where dead tests are often as effective as live measurements.

Related products Electrical safety and you: If your leads break during testing it can be easy to swap them for another set from a multimeter or clamp meter.

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

Such devices should be proved before and after use. 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.

For loop impedance, RCD or multifunction testers, the fuse will typically be 10A. This document provides advice and guidance on how to achieve this.

When it comes to proving dead this has always been advised against by Electrical Safety First previously the Electrical Safety Council. Trusted by Professionals Search: We look at the key changes in the fourth edition, the full version of which can be downloaded at the end of this article. The Electricity at Work Regulations require those in control of all or part of an electrical system to ensure it is safe to use and maintained in a safe condition.


The document provides advice and guidance on how to work safely and ensure the right equipment is hs38 and maintained properly.

Updates regarding the causes of accidents This section has been expanded on to include additional issues that have been raised since the previous publication: Safe working practices Memorandum of guidance on the Electricity at Work Regulation. 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.

Examination of hde The changes here are mainly with the wording, however this section gs3 highlight the need to maintain regular checks of test equipment and that these should be carried out by a competent person.

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

This website uses non-intrusive cookies to improve your user experience. Whenever there are changes made to legislation and best practice, questions are often raised regarding existing equipment and whether it can hsw be used. Wherever ga38, all work on electrical systems should be carried out with the system dead. Two key fs38 have been added to the examples of common problems to look for: 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.