No wiring other than the following shall be employed:
A. Commercial, Industrial, Public Buildings and Apartment Houses.
1. All wiring installed shall be in conduit, surface metal raceway, underfloor raceway, electrical metallic tubing, castinplace raceway and wireways and busways.
2. No wiring shall be connected to any circuit that does not comply with such specifications.
3. No wiring shall be added to an existing system without first correcting any overloaded circuit condition that may exist by splitting up the circuit so that the safe carrying capacity of the conductors is not exceeded. All new wiring installed to make such corrections shall comply with the above.
4. Where outlets or equipment are moved, not to exceed five feet, the type of wiring already in place, if in a safe condition, may be used for such extension. If more than five feet, such extension shall comply with the above.
B. Residences.
1. All complete wiring systems hereafter installed, whether in a building under construction or one already completed, shall be in conduit, surface metal raceway or electrical metallic tubing. There shall be a convenience outlet in each wall of the living room and at least two convenience outlets in all other rooms.
2. All wiring installed in additions to buildings such as a new room or porch that does not exceed thirty percent of the area of the building may be the same type as exists. Convenience outlets are required in all new rooms as specified above.
3. Outlets added to existing wiring may be wired in accordance with the type of wiring already in place provided such wiring complies with the National Electrical Code requirements for open wires, concealed knob-and-tube work, conduit, surface metal raceway, armored cable, nonmetallic sheathed cable or electrical metallic tubing.
4. Any circuit found to be overloaded shall be split up so that the safe carrying capacity of the conductors is not exceeded. (Prior code § 16-1-11)