Area Required for Transformer Room and Substation for Different capacities

Minimum Load Densities
Minimum Load Densities
Type of occupancy		Unit Load W/m2 Covered Area
		Non A.C.	A.C.
Dwelling: single/multi families (other than Hotels)		25	100
Office Bldg/Commercial Multistoried Bldgs.		35	95
Hospitals		40	105
Schools/College		15	90
Large Storage Space, Ware House		2	_
Restaurants (Excluding Electric Cooking)		20	95
Industrial Bldgs(Excuding the loads for machine)		20
Hotel/Motel/appartment house (Without cooking loads of Tenants)		30	100
Banks		25	95
Barbar Shops & Beauty Parlours		40	100
Departmental Store		35	95
Parking area in Commercial Bldg		4
Area Required for Transformer Room and Substation for Different capacities
Capacity of Transformer  (KVA)	Transformer Room Area  (m2)		Total Sub-station Area(With H.T. , L.T., panels & transformer room but without Generator (m2)
1 x 150	12		42
1 x 250	13		45
2 x 250	26		90
1 x 400	13		45
2 x 400	26		90
3 x 400	39		135
2 x 630	26		90
3 x 630	39		135
2 x 1000	26		90
3 x 1000	39		135

Area Requirement for Stand by Generator Room

Area Requirement for Stand by Generator Room
Capacity (Kwatt)	Area (m2)
1 x 25	20
1 x 48	24
1 x 100	30
1 x 150	36
1 x 300	48
1 x 500	56

Note :

1)     Sub-Station equipment  and  Generator  shall  not be installed in Basement floor of any 

        building .

2)     A separate Sub-Station building is preferred for any project. Location of  Sub- Station            

        building  shall be at load center of the complex.