Additions, alterations, renovations and repairs to the following systems and installations shall conform to the requirements for new systems and installations without requiring any portion of the existing systems and installations to comply with all of the requirements of the applicable technical codes. Additions, alterations and repairs shall not cause an existing system or installation to become unsafe, hazardous or overloaded.
- Electrical installations
- Fuel gas installations
- Mechanical systems
- Plumbing systems
- Service water-heating systems