Rule 67
Standard Of Electrical Devices And Method Of Use
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The licensee, shall  have to abide by the following matters from the point of view of standard  and safety of the electrical devices to be used in the works of production,  transmission and distribution of the electricity:-
(a) Materials and devices of high standards should be used,
(b) when bringing into operation the new plant or after repairing the old  one, it should be operated after conducting all tests from the technical  point of view and be proved proper,
(c) The electric wires to be used for any purpose should be of adequate  capacity required for that work,
(d) While joining the electric wires, it should be joined in accordance with
the recognized technical standard in such a way that a danger might not
arise,
(e) The joint boxes of underground wire, metallic conduct joint and joint of   metallic sheets of the wire shall have to be installed on such places that  those joints could be easily accessible for inspection.
(f) Fuses, circuit breaker or any appropriate device shall have to be  installed in such a way that if more current than the specified current  flow in the electric circuit or sub-circuit, they might resist the flow of  current and there would not arise any danger. These devices, while in  operation, should be such that extra heat would not be produced, nonsparking  and would of no danger at the time of changing.
(g) Single phase switch is not allowed to be installed in the neutral wire  except on live wire.