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Ideal location of substation for a multi-storied building is at
Outside the building
Top floor
Ground floor
Basement
Ground floor
The ideal location for a substation in a multi-storied building is the ground floor. This placement ensures ease of maintenance, accessibility for heavy equipment installation, and provides a direct, low-resistance path for the main incoming high-voltage supply.
The ideal location for a substation in a multi-storied building is the ground floor. This placement ensures ease of maintenance, accessibility for heavy equipment installation, and provides a direct, low-resistance path for the main incoming high-voltage supply.
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The placement minimizes the length of the incoming HV cables, thereby reducing potential transmission losses and the risk of faults within the building structure. Placing the substation on the ground floor significantly simplifies the cooling requirements and fire-fighting access, which are critical safety compliance mandates for high-rise building electrical installations.
Ease of access for heavy transformers and switchgear equipment.
Fire safety regulations in India (NBC/IE Rules) strictly advise against upper-floor transformer installations.
Reduction in weight loading requirements on floor slabs.
Efficient ventilation and cooling for oil-cooled or dry-type transformers.
Improved fire safety response time.
Lower installation costs due to shorter cable runs.
Enhanced accessibility for routine preventive maintenance.
Requires dedicated floor space on the ground level which is often prime real estate.
Potential noise and vibration transmission to nearby office/residential units.
According to National Building Code (NBC) of India, substation equipment should ideally be in a well-ventilated room on the ground floor or basement with direct external access.
Option B (Top floor) is rejected due to safety risks and structural weight constraints.
Option D (Basement) is acceptable but less ideal than the ground floor due to flood risk and ventilation challenges.
C is correct тАФ The ground floor provides the most accessible, safest, and structurally efficient location for heavy electrical power distribution equipment in a multi-storied building.
Always relate infrastructure choices to IE Rule requirements for safety and local building fire code compliance in Indian exam contexts.