Dielectrical testing is carried out on fire extinguishers to determine whether they are safe for use on electrical equpiment. If the contents conducts electricity, it will not be safe for this use. Once the extinguisher has passed this test, it is still limited for safety reasons for use on maximum 1000V and a minimum distance between extinguisher and fire of 1 meter (1000V is four times the voltage used in a domestic building). Find out more about dialectrical testing or view our range of extinguishers for electrical equipment.
Reviewed: 01/02/2023 (doc:535 V1.0). Our articles are reviewed regularly. However, any changes made to standards or legislation following the review date will not have been considered. Please note that we provide abridged, easy-to-understand guidance. To make detailed decisions about your fire safety provisions, you might require further advice or need to consult the full standards and legislation.
