1.1 This specification covers nonrigid tubing of vinyl chloride polymer or its copolymers with other materials for use in electrical insulation in three grades, as follows:

1.1.1 Grade A--General-purpose.

1.1.2 Grade B--Low-temperature.

1.1.3 Grade C--High-temperature.

Note 1--This standard is similar but not identical to IEC 60684-3-100 to -105.