Section 123(7) in The Indian Electricity Rules, 1956
(7)[ Flexible cable exceeding ninety metres in length shall not be used with any portable or transportable apparatus:Provided that such flexible cable when used with coal-cutting machines or cutter or loader or armoured face conveyor for long wall operation, or with shuttle cars or load haul dumper or cutter loader or all alike equipment, for development and de-pillaring operation, shall not exceed two hundred and fifty metres in length:Provided further that the aforesaid cable in case of an open cast mine, when used with electrically operated heavy earth moving machinery, shall not exceed three hundred metres in length and for bucked wheel excavator at 11 KV shall not exceed one thousand metres in length.] [Substituted by G.S.R. 274, dated 10.7.2002 (w.e.f. 20.7.2002). ]
