Where the conductors include an earthed conductor of a two-wire system or an earthed neutral conductor of a multi-wire system or a conductor which is to be connected thereto, the following conditions shall be complied with, -
(i) an indication of a permanent nature shall be provided by the owner of the earthed or earthed neutral conductor, or the conductor which is to be connected thereto, to enable such conductor to be distinguished from any live conductor and such indication shall be provided as per relevant standards, namely: –
(a) where the earthed or earthed neutral conductor is the property of the supplier, at or near the point of commencement of supply;
(b) where a conductor forming part of a consumer‟s system is to be connected to the supplier‟s earthed or earthed neutral conductor, at the point where such connection is to be made; and
(c) in all other cases, at a point corresponding to the point of commencement of supply.
(ii) no cut-out, link, switch or circuit breaker other than a linked switch arranged to operate simultaneously on the earthed or earthed neutral conductor and live conductors shall be inserted or remain inserted in any earthed or earthed neutral conductor of a two wire-system or in any earthed or earthed neutral conductor of a multi-wire system or in any conductor connected thereto:
Provided that the above requirement shall not apply in case of a link for testing purposes, or a switch for controlling a generator or transformer.