UL 101:2019 PDF Download

The UL 101:2019 standard for Leakage Current for Utilization Equipment is applicable to household and similar appliances, specifically those that are cord- and plug-connected. The standard covers equipment that is typically rated 20 A or less, operates at a nominal frequency of 50 or 60 Hz, and uses 3-wire or 2-wire cords. These appliances are intended for use on supply circuits that do not exceed 150-300 V to the ground.

It is important to note that this standard does not exclude utilization equipment that is currently rated higher than 20 A or has a voltage rating higher than 300 V from referencing this standard. However, there are certain exclusions specified in the standard. Appliances that have a grounding connection made at the factory to the neutral terminal and electronic measuring instruments not intended for household use are not covered by this standard.

Additionally, the values provided in this standard do not offer protection against minute currents that could potentially lead to ventricular fibrillation if directly applied to the heart, such as through a heart catheter. It is essential to understand that the standard does not apply to utilization equipment with a grounded connection made at the factory to the neutral terminal, and the specified values do not provide protection against these specific risks related to heart fibrillation.