This specification applies to earth-leakage circuit-breakers for use on both direct and alternating current systems at low or medium voltages. An earth leakage circuit-breaker intended for use in a direct-current circuit shall be deemed suitable for such use if the earth leakage tripping coil opens the circuit-breaker under the conditions set out in Clause 7 when D.C. voltages are applies, and if it otherwise conforms with the requirements of this specifiaction.
Test Method for Determining the Impact on Wet Coefficients of Friction of Various Chemical or Physical Walkway Surface Cleaners and Treatments on Common Hard-Surface Flooring Materials
