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.

Author: Kagamuro Voodoomuro
Country: Armenia
Language: English (Spanish)
Genre: Art
Published (Last): 5 January 2011
Pages: 327
PDF File Size: 19.19 Mb
ePub File Size: 17.40 Mb
ISBN: 284-7-23291-738-7
Downloads: 74827
Price: Free* [*Free Regsitration Required]
Uploader: Tolabar

This includes electrical testing where dead tests are often as effective as live measurements. 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. For loop impedance, RCD or multifunction testers, the fuse will typically be 10A.

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. This standard, which came into full effect in Mayis the standard that jse new two pole voltage indicators should comply with.

Is this page useful?

Electrical test equipment for use on low voltage electrical systems

The guidance has not fundamentally she from the previous version. The fourth edition of GS38 makes two important points regarding the purchase of new equipment and the use of older equipment. 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.

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. Skip to content Skip to navigation. 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 Such devices should be proved before and after use.

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


A footnote has been added to clarify that live working is defined as any testing or fault finding on live systems. You can visit our cookie privacy page for more information. A final change regarding test leads relates to the use of fused leads. Related products Electrical safety and you: Risky business Vehicle safety on farms Kidsafe: 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.

This has a new paragraph added regarding the use of non-contact detectors, or volt sticks: Setting the multimeter to the wrong voltage range will bse 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. Only devices which make contact with the conductor ie not proximity devices should be used for proving dead.

If you are unsure as to what test leads you need to use, speak to our technical team on GS38 Fourth edition Download a free copy. Hze before testing This section has been expanded upon to recognise additional test processes covered by the guidance note. 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.

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: This has changed in the fourth edition, emphasising the importance of using test leads and test equipment that hhse suitable for the category of the installation.

Safe working practices Memorandum of guidance on the Electricity at Work Regulation. Electrical test equipment for use on bse voltage electrical systems Date of publication: This should be done preferably on a hee 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.

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. Whenever there are changes made to legislation and best practice, questions are often raised regarding existing equipment and whether it can still be used.

A brief guide Electricity at work: If hze find you have leads or test equipment that no longer meet these requirements, or have been damaged, it would be advisable to replace them to ensure your ongoing safety.


There are particular requirements for the use of non-contact devices in coalmines. An important point raised in the causes of accidents is the use of multimeters.

Hse guidance note gs38:

Provided your existing equipment or leads meet either of the above there should be no need to replace anything until they vs38 it. 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. Health and Safety Executive. When it comes to proving dead this has always been advised against by Electrical Safety First previously the Electrical Safety Council.

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.

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.

HSE aims to reduce work-related death, injury and ill health.

Electrical test equipment for use on low voltage electrical systems

There are several points highlighted here that should be considered closely when it comes to test equipment selection. This document provides advice and guidance on how to achieve this. When it comes to buying new voltage detectors, you can be sure compliance with GS38 if the unit you are buying complies to BS EN See also Electrical safety at work Safe maintenance Risk management The health and safety toolbox – how to control risks at work.

A – switch to normal size A – switch to large size A – switch to larger size. For multimeters, fused leads should have a high-breaking capacity fuse hbc or hrc with a current rating that usually should not exceed mA. Trusted by Professionals Search: 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.