This clause of IS : 302-1979 is〓 applicable except as follows:
1.1 Replacement:
This standard covers the requirements and methods of tests for mineral filled sheathed heating elements, designed to operate under specified operating conditions and meant for use in heating appliances, such as immersion heaters, cooking appliances, kettles and oil heaters.
IS 4159-1983 history
1984IS 4159-1983 Specification for Mineral Filled Sheathed Heating Elements