Procedure on 
Power Supply to Multistoried Buildings/Housing Complexes/
Residential Colonies etc.
(Approved by OERC - Vide No. Engg-10/2001, dt. 11.07.2001)

1.

Objective

It has become necessary to adopt simple and uniform procedure and guidelines in providing service connection to Multistoried Buildings/ Apartment Buildings and other Housing Complexes and Residential colonies of power plants, Irrigation Projects and Construction Projects of Government and Non-government Organisations, Educational Institutions and other institutions so that the obligations of supplier and consumer are well defined and guidelines are given for commercial, technical and post-connection maintenance issues.

2. Definitions
Apartment Buildings A building consisting of several independent apartments/ rooms/ flats.
Multistoried Buildings Buildings having four or more floors excluding basement.
Residential Colonies A colony built and maintained by Govt. or other Agencies for their employees/inmates.
Housing Complexes A well defined area with boundary within which several houses are constructed by independent house owners on lease/sale basis.
3.

Reference to Regulation

Nothing contained in these guidelines shall be repugnant to the Orissa Electricity Regulatory Commission Distribution (Conditions of Supply) Code, 1998 including any amendment made thereon which shall hereinafter be referred to as Code 1998, and the Indian Electricity Rules, 1956, which shall, hereinafter, be referred to an Rules 1956.

4. Technical
4.1

Power Supply shall be generally at a single point unless mutually agreed. The power supply can be given separately to the lawful occupants of the flats (The point of supply shall be the point as defined under Rule 58 of the I.E. Rules 1956).

4.1.1 Multistoried Buliding/ Apartment Buildings

Power supply shall be given to the occupants of flats in Multi-storied Buildings/ Apartment Buildings through inpidual service connection or at a single point for the entire building complex. For multistoried buildings/ Apartment Buildings the point of commencement of supply shall be at the outgoing terminals of a circuit breaker of suitable rating. Power supply shall be made at 3 phase LT or HT (11 KV or 33 KV) as the case may be. The incoming supply shall be a 3 phase 4 core cable or few single core cables of appropriate rating depending upon maximum load, ambient temperature and method of laying. The cable shall be laid either from the nearest L.T. Distribution Line Poles/33/0.4 KV or 11/0.4 KV substations of the Licensee situated outside the premises or from the extended HT/LT Distribution System inside the premises as the case may be. In the later case the L.T. portion of the extended L.T. line within the premises shall be preferably through ABC (Aerial Bunched Cable).

4.1.1.1

The developer or owner of the multistoried buildings/apartment building shall provide either in the basement or in the ground floor a room with proper ventilation and locking arrangement for installation of a 3 phase 400 V flame proof metal clad switch board with copper bus bar arrangement and provided with suitably rated incoming circuit breaker and sufficient numbers of suitably rated 3 phase and 1 phase+N iron clad triple pole and iron clad double pole switch fuse units for outgoing circuits. The supplier shall invariably install a 3 phase 4 wire unbalanced KWH meter in his incoming. The owner of the building shall wire all the apartments/rooms/common facilities such as Lift, Borewell Pump Street/common area Lights, Community Centres etc. and connect the same through suitably rated cables laid in metal conduits to suitable outlets in the L.T. Switch Board. Independent 3 Phase or 1phase meters, with cutouts as required, shall be provided for each outlet, wired and maintained on a meter board installed adjacent to the L.T. Switch Board.

4.1.1.2

The Owner/Occupier of a multistoried building shall ensure that electricity installations/ works inside the premises/ building are carried out and maintained in such a manner as to prevent danger due to shock and fire hazards, and the installation is carried out in accordance with the relevant codes and practices.

4.1.1.3

No other service pipes shall be taken along the ducts provided for laying power cables. All ducts provided for power cables and other services shall be provided with fire-barrier at each floor crossing.

4.1.1.4

All electrical installations inside the boundary where single or several blocks of multistoried buildings are located including overhead lines, substations, cable connections etc. shall confirm to Rule 29 of I.E. Rules 1956.

4.1.1.5

All electrical installations including H.T. lines substations and L.T. lines as required, within the boundary shall be executed by the owner through licensed electrical contractors. All materials and apparatus used shall confirm to the relevant specifications of the Bureau of Indian Standards. Alternatively if the owner so expressly desires, the works can be executed as a Deposit work by the licensee as per norms approved by OERC. The licensee, if requested by owner and agreed to by a special agreement, may takeover the external installations within the boundary and maintain the same, thereafter.

4.1.2

For other Housing Complexes & Residential Colonies the point of commencement of supply shall be at the outgoing terminals of a switch fuse unit/circuit breaker of suitable rating located within a switch room immediately adjacent to the boundary wall. Power supply shall be at 3 phase LT or at HT (11 KV or 33 KV) as the case may be. A 3 phase service connection with neutral through cable shall be drawn from the nearest L.T. Distribution Pole/11/0.4 KV or 33/0.4 KV substation. The owner will connect his distribution system feeding the colony through cutouts placed after the point of commencement of supply. The supplier shall install a three phase 4 wire unbalanced meter at the point of commencement of supply for billing purpose. In a Housing Complexes if the licensee takes over the external installation through a special agreement (vide clause-4.1.2.3), the independent house owners may provide independent 3 phase or single phase meters, with cutouts as required on a meter board inside their independent premises confirming to Regulation 54 of the Code. The meters can be installed in a common area for group of houses also.

4.1.2.1

All the electrical installations inside the boundary including overhead lines, substations, cable connections etc., shall conforms to Rule 29 of I.E. Rules 1956.

4.1.2.2

The owner/occupier of a residential colony shall ensure that electrical installations/ works inside the building are carried out and maintained in such a manner as to prevent danger due to shock and fire hazards, and the installation is carried out in accordance with relevant codes and practices.

4.1.2.3

All electrical installations as required within the Housing Complexes, Residential Colonies, shall be executed by the owner through licensed electrical contractors. All materials and apparatus used shall conform to the relevant specifications of the Bureau of Indian Standards. The Licensee, if requested, by owner and agreed to by a Special agreement may takeover the external installations within the boundary and maintain the same, thereafter.

4.2

Power supply with contract demand upto 70 KVA shall be given at L.T. as prescribed in Condition 76(a)iii of the Code, 1998 from an independent substation. Condition 76(b), (c) or (d) of the Code as applicable shall be followed for giving power supply for contract demand of above 70 KVA at HT from independent sub-station.

5. Commercial
5.1

Power supply arrangement shall consist of two phases, namely, outside the premises, along the public road or street and inside the premises.

5.1.1

Outside the Premises 

Licensees' obligation to supply shall be in accordance with the Regulation 14 of Code 1998 read with the practice direction for calculation of commercial viability norms approved with Commission effective from 01.07.2001.

5.1.2 Inside the Premises

The entire cost of electrical installations/works inside the premises including H.T. line, 11/0.4 KV substation, L.T. lines, cables as required shall be borne by the owner.

6. Metering
6.1 Multistoried Building/Apartment Building
6.1.1

In case of a single point supply the metering shall be at the point of commencement of supply.

6.1.2

In case the apartments/flats/rooms of multistoried Building/Apartment Building after completion are sold out to different owners the meters shall be fixed for each independent owner of Flats/Rooms etc, in a meter Board near L.T. Switch Board in basement to ground floor (supply will be given to lawful occupants of the flat after observing all formalities). Disconnection to inpidual owners shall be afforded through sealable cutouts provided in the meter Board, wherever required.

6.2 Housing Complexes
6.2.1

In case of a single point supply the metering shall be at the point of commencement of supply.

6.2.2

If the Licensee takes over the external installations within the boundary as per Clause 4.1.2.3, and in case the independent houses of Housing complex after completion are sold out to different owners, the meters shall be fixed for each independent house on a meter board in the premises or in a common area for a group of house confirming to Regulation 54 of the Code. In this case the licensee has got the rights to have access upto the meter point confirming to Regulation 62 (supply will be given to lawful occupants of the inpidual houses after observing all formalities). Disconnection to inpidual owners shall be afforded through sealable cutouts provided in the meter Board, wherever required.

6.3 Residential Colonies
6.3.1

In case of a single point supply the metering shall be at the point of commencement of supply.

7. General
7.1

The Licensee shall have the authority of entry at all times by his authorised representatives/workman to take meter readings, to operate the incoming switch and carryout such other works or operations necessary for the safe and reliable working of the equipment installed in the premises, through a Special Agreement.

7.2

The layout of the Switch room, specification of L.T. Switch Board and Meter Board. Earthing arrangements, cabling, wiring arrangements of the Meter Board etc. shall be got approved from the licensee before procurement and installation.

7.3

Fire extinguishers of approved design shall be provided in the Switch Room by the owner/promoter.

7.4

The owner of the Residential Colony and other Housing Complexes shall provide a secured and secluded room with proper ventilation and locking arrangement adjacent to the boundary wall for installing the incoming isolating switch with fuses or circuit breaker, meter by the Licensee from where the owner will connect his L.T. distribution system to cater to the load in the precinct. The room shall remain under the control of the Licensee as long as the power supply agreement in the vogue.

7.5

The inspection of the electrical installation by the Electrical Inspector shall be arranged by the licensee/developer relating to their respective installation they have carried out.