(1) The electricity shall not be supplied, transformed, converted, inverted or used or continued to be supplied, transformed, converted, inverted or used unless the conditions provided in subregulations (2) to (8) are complied with.
(2) The following controls of requisite capacity to carry and break the current shall be installed as near as possible after the point of commencement of supply so as to be readily accessible and capable of completely isolating the supply to the installation, such equipment being in addition to any control switch installed for controlling individual circuits or apparatus, namely: – Supplied at voltage Control Below 11 kV. Switch fuse unit or a circuit breaker by consumers.
11 kV and above. A circuit breaker by consumers.
(3) In case of every transformer the following shall be provided, namely: –
(i) on primary side of transformer, a linked switch with fuse or gang operated air break switch with fuse or circuit breaker of adequate capacity:
Provided that the linked switch with fuse on the primary side of the transformer may be of such capacity as to carry the full load current and to break only the magnetising current of the transformer:
Provided further that for transformer having capacity of 1000 kVA and above, a circuit breaker shall be provided:
Provided also that the linked switch with fuse or gang operated air break switch with fuse or circuit breaker on the primary side of the transformer shall not be required for the unit auxiliary transformer and generator transformer;
(ii) on the secondary side of all transformers a circuit breaker of adequate rating shall be installed:
Provided that for supplier‟s transformers of capacity below 1000 kVA, a linked switch with fuse or circuit breaker of adequate rating shall be installed on secondary side.
(4) Except in the case of composite control gear designed as a unit each distinct circuit is to be protected against excess energy by means of a suitable fuse link or a circuit breaker of adequate breaking capacity, suitably located and so constructed as to prevent danger from overheating, arcing or scattering of hot metal when it comes into operation and to permit for ready renewal of the fuse link without danger.
(5) The supply of electricity to each motor or a group of motors or other apparatus meant for operating one particular machine shall be controlled by a suitable linked switch or a circuit breaker or an emergency tripping device with manual reset of requisite capacity placed in such a position as to be adjacent to the motor or a group of motors or other apparatus readily accessible to and easily operated by the person incharge and so connected in the circuit that by its means all supply of electricity can be cut off from the motor or group of motors or apparatus from any regulating switch, resistance of other device associated therewith.
(6) All insulating materials shall be as per their applicaton and their mechanical strength shall be sufficient for [भाग III—खण्ड 4] भारतकाराजपत्र:असाधारण 113 the purpose so as to maintain adequately their insulating property under all working conditions in respect of temperature, moisture, salinity and pollution.
(7) Adequate precautions shall be taken to ensure that no live parts are exposed as to cause danger.
(8) Every consumer shall use all reasonable means to ensure that where electricity is supplied by the supplier, no person other than the supplier shall interfere with service lines and apparatus placed by the supplier on the premises of the consumer.