Correct Answer - Option 3 : 3.5 m
Explanation:
The horizontal part of the wire should be 3.5 m above the floor level.
Mounting levels of the accessories and cables as recommended in B.I.S. and N.E.C.
- The height of main and branch distribution boards should be no more than 2m from the floor level. A front clearance of 1 m should also be provided.
- All the lighting fittings shall be at a height of not less than 2.25 m from the floor.
- A switch shall be installed at any height of 1.3 m above the floor level.
- Socket-outlets shall be installed either 0.25 or 1.3 m above the floor as desired.
- The clearance between the bottom point of the ceiling fan and the floor shall be not less than 2.4 m.
- The minimum clearance between the ceiling and the plane of the blades of the fan shall not be less than 300 mm.
- The cables shall be run at any desired height from the ground level, and while passing through the floors in the case of the wood casing and capping and T.R.S. wiring, it shall be carried in heavy gauge conduit 1.5 m above floor level.
