4.—(1) The limitations referred to in regulation 3(2) are—
(a)the electric line must not have a nominal voltage greater than the nominal voltage of the existing line;
(b)where the electric line has a voltage of 220 kilovolts or more it must not exceed 15 kilometres in length;
(c)any conditions applicable to the existing line which are contained in a consent under section 37(1) of the Act or section 10(b) of the Schedule to the Electric Lighting (Clauses) Act 1899(1) must be complied with;
(d)the height above the surface of the ground of any support for the electric line must not exceed the height of the highest existing support or support which is being replaced by more than 20 per cent;
(e)where the electric line is installed in a different position from the existing line the distance between—
(i)any small support and the existing line must not exceed 30 metres; and
(ii)any other support and the existing line must not exceed 100 metres; and
(f)where the electric line is installed in a different position from the existing line, the existing line is removed within a period of twelve months beginning with the date on which the installation of the electric line which replaces it is completed.
(2) Paragraph (1) applies to an additional pole or support installed by virtue of regulation 3(1)(f) as it applies to a pole or support which replaces an existing support.
(3) In this regulation—
(a)any reference to the distance between a support and an existing line is a reference to the shortest distance between the centre of the base of that support and an imaginary line through the centre of the base of each support for the existing line; and
(b)“small support” means a support for an electric line which does not exceed 10 metres in height.
1899 c.19. Repealed by the Electricity Act 1989. Any consent under section 10(b) is preserved by paragraph 5(2) of Schedule 17 of the Electricity Act 1989.