Low Voltage Electrical Equipment Testing Guidance

Britain’s Health and Safety Executive (HSE) has updated its electrical testing guidance for low voltage electrical equipment INDG354.

INDG354 covers electrical testing of low voltage equipment, eg industrial and domestic appliances (low voltage is defined as not exceeding 1000 V ac or 1500 V dc). Most of this equipment will be used on mains supply voltages of 230 V ac single phase or 400 V ac three phase. However, there could be internally derived voltages which are much higher and in some cases above the low voltage limits; these are still covered by this guidance.

The guidance supplements the information in HSG85 Electricity at work: Safe working practices. HSG85 gives more general guidance to managers. It covers the key things to consider when devising safe working practices for people who carry out work on or near all types of electrical equipment.