Section 24 in The Orissa State Electricity Board (General Conditions of Supply) Regulations, 1995
24.
The voltage of supply shall be determined by the Engineer depending on the contract demand of the consumer. The supply voltage for the contract demands shall normally be as follows :(a)For contract demand normally not exceeding 3 KW/3.5 KVA, excepting in the case of Irrigation Pumps and agricultural services, shall be single phase, two wire and 230 volts.(b)For Irrigation pumping and agricultural service load up to and including 3 BHP, supply shall be at single phase, two wire and 230 volts, between phase and neutral or 3 phase, 3 or 4 wire and 400 volts between phases.(c)For load above 3 KWs/3.5 KVA, supply shall be at 2 phase, 3 wires or 3 phase and 3 or 4 wires at 400 volts.(d)For a contract demand above 70 KVA, up to but excluding 555 KVA, supply shall be in 3 phase 3 wire at 11000 volts.(e)For contract demand above 555 KVA up to but excluding 1110 KVA, supply may be given at 3 phase 3 wire at 11000 volts or 33000 volts depending on the convenience of the Board.(f)For contract demand above 1110 KVA up to but excluding 5000 KVA, supply shall be in 3 phase 3 wire 33000 volts.(g)For contract demand above 5000 KVA, supply shall be in 3 phase 3 wire and at 132000 or 220000 volts or 400000 volts, depending on the convenience of the Board.Board at its discretion, may also supply to above categories at ;any other voltage depending on system availability/condition.
