Installation in surface-mounted or embedded conduits,
or similar closed systems and where the maximum
conductor temperature in normal use of 90 °C.
is not exceeded. If installed in distribution systems
the maximum continuous operating temperature
shall be limited to 70 °C. Suitable for fixed protected
installation in, lighting and control gear for voltages
up to and including 1000V a.c. or up to 750 V d.c. to
earth