Hong Kong Regulations

ELECTRICITY SUPPLY REGULATIONS - REGULATION 4

Minimum size of conductors

(1) The sectional area of the conductor in any electric line other than low
tension laid or erected in any street after 2 December 1921, shall not be less
than that of a strand of 7 wires, each of which is of No. 22 standard wire
gauge, and the sectional area of every wire in a strand forming any such
conductor shall not be less than that gauge, and where such stranded conductor
is erected it shall be suspended from a suitable bearer wire or shall be
protected by a suitable cradle fixed underneath. In the case of low tension
conductors in any electric line the sectional area shall not be less than that
of single wire of No. 16 standard wire gauge efficiently insulated.

(2) This regulation shall not apply in the case of an electric line placed in
a lamp post.