Section CC106 - WIRING FOR FUTURE ELECTRIFICATIONCC106 Add Section CC106 as follows:
CC106.1Additional Electric Infrastructure. All combustion equipment and end-uses shall be installed in accordance with this section. Capacity for the future electric circuits required in this section shall be included in the load calculations of the original installation of electric service to the building, and each dwelling unit for R-use buildings or portions thereof. CC106.1.1Electric Infrastructure for Dwelling and Sleeping Units. Combustion equipment and end-uses serving individual dwelling units or sleeping units shall comply with Section RC104.4.3 Electric Readiness.CC106.1.2Combustion Water Heating Equipment. Gas-fired or oil-fired water heaters with a capacity less than 300,000 Btu/h (88 kW) shall be installed in accordance with the following: 1. A dedicated 208/240-volt branch circuit with a minimum capacity of 30 amps shall terminate within three feet (914 mm) from the water heater and be accessible to the water heater with no obstructions. Both ends of the branch circuit shall be labeled with the words "For Future Heat Pump Water Heater" and be electrically isolated,2. A condensate drain that is no more than two inches (51 mm) higher than the base of the installed water heater and allows natural draining without pump assistance shall be installed within three feet (914 mm) of the water heater,3. The water heater shall be installed in a space with minimum dimensions of three feet (914 mm) by three feet (914 mm) by seven feet (2134 mm) high, and4. The water heater shall be installed in a space with a minimum volume of 700 cubic feet (20,000 L) or the equivalent of one 16-inch (406 mm) by 24-inch (610 mm) grill to a heated space and one eight-inch (203 mm) duct of no more than ten feet (3048 mm) in length for cool exhaust air.CC106.1.3Cooking Ranges, Ovens and Cooktops. An individual branch circuit outlet with a minimum rating of 250-volts, 40-amperes shall be installed within three feet of each gas or propane range or any permanently installed combustion equipment oven or cooktop. Exception: Commercial kitchens for cafeteria, restaurant or commercial catering business use.
CC106.1.5Other combustion equipment. Combustion equipment not covered by Sections CC106.1.1 and CC106.1.4 and within buildings having average ventilation at full occupancy of 0.5 cfm/sf or less shall be provided with conduit that is continuous between a junction box located within 3 feet (914 mm) of the appliance or equipment and an electrical panel. The junction box, conduit and bus bar in the electrical panel shall be rated and sized to accommodate a branch circuit with sufficient capacity for an equivalent electric appliance, equipment or end use with an equivalent equipment capacity. The electrical junction box and electrical panel shall have labels stating, "For future electric equipment".CC106.1.6Othercombustion equipment, highly ventilated buildings. Combustion equipment not covered by Sections CC106.1.1 and CC106.1.4 and within buildings having average ventilation at full occupancy of greater than 0.5 cfm/sf shall comply with Section CC106.1.6.1 through CC106.1.6.5.CC106.1.6.1HVAC Design and Installed Associated Electric Service. An all-electric HVAC retrofit design shall be prepared by the HVAC engineer for approval by the authority having jurisdiction. The electric service installed with the building shall be sufficient to accommodate the all-electric HVAC retrofit design. The contract documents shall show future replacement of combustion equipment based HVAC system with an equivalent all-electric system. Contract documents shall show combustion equipment to be replaced, future electric equipment, supporting electric, structural, and architectural infrastructure to be installed during building construction, and space allotments for future equipment.CC106.1.6.2Heating, Ventilation, and Air Conditioning (HVAC) Compatibility. HVAC design shall ensure that air, water, or other systems serviced by combustion equipment can also be serviced by future electric retrofit equipment without having to upgrade, alter, or update such systems.CC106.1.6.3Equipment Efficiencies. Electric retrofit equipment used for space and water heating shall conform to Section C401.4.3.CC106.1.6.4Installed Infrastructure. Infrastructure shall be installed as part of building construction to accommodate future electric retrofit in order to minimize cost and disruption during retrofit. Infrastructure to be installed as part of building construction shall include, but is not limited to, power infrastructure to the building to accommodate future electric retrofit system, electric service to future distributed equipment within the building, conduits to accommodate controls to future distributed equipment within the building, and structural and architectural elements to accommodate future retrofit equipment.CC106.1.6.5Space for Future Retrofit Equipment. Interior and exterior space shall be allotted to accommodate all future electric retrofit equipment. Where interior or exterior allotted space exceeds the space used for combustion equipment to be replaced, and/or does not correspond to the combustion equipment locations to be replaced, such space shall be set aside and may not be used for any other purpose. Signage, labels, and borders shall be used to prominently display areas and limits set aside for future equipment to prevent encroachment.Adopted by Mass Register Issue 1485, eff. 12/23/2022.