Section 29(14)(a) in Tamil Nadu Electricity Regulatory Commission Tamil Nadu Electricity Distribution Code
(a)[For indoor metering, an electrical room with RCC roof having a clear floor area 5mx6m with a vertical clearance of 3.7 metres between the floor and the ceiling/beam bottom with locking facility, exhaust fan and adequate size of cable duct shall be provided at the ground/basement floor for installing the Licensee's equipments, etc. This room shall be of fireproof and weatherproof] [[Substituted as per Commission's Notification No. TNERC/DC/8-1 dated 22.11.2005 (w.e.f. 7.12.2005)Before Substitution stood as under:(sic)storied buildings having a total floor area of 900 square meter and above multistoried building i.e. Ground plus three or more floors including stilt floor/ basement floor for Low Tension Service Connection.]]