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Air seal around all wiring installed through walls, ceilings, and flooring to keep conditioned air from leaking into unconditioned space.
Air seal the electrical panel
Air-tight electrical boxes have built-in gaskets and self-sealing wire holes
Caulk electrical boxes mounted in the ceiling
Caulk holes in the electrical box, caulk the wire holes, and caulk the face of the box to the drywall
Electrical boxes are sealed with air sealing tape.
Foam wiring holes in top plate
Lithium-ion batteries charged by the solar photovoltaic panels provide 200 amperes of standby electricity to critical circuits in case of power failure.
Mineral wool batts are precisely cut to fit around electrical boxes in the wall cavities, preventing cold spots in walls.
Right – Neatly cut hole has been properly sealed with foam
Right – Wiring penetrations have been neatly sealed with foam
Right – Wiring penetrations have been neatly sealed with foam
Right – Wiring penetrations have been neatly sealed with foam
These inverters convert the power from the home’s 6.8-kW of photovoltaic panels from DC to AC for connection to the grid; the inverters can also be connected to batteries for backup power storage.
This home was made PV ready with the installation of conduit and a dedicated electrical outlet for wiring from the roof to the circuit breaker box on the first floor.
Wall space is provided next to the electrical panel in the garage for the home’s photovoltaics system.
Wrong – Electrical bypass not sealed
Wrong – Electrical bypass not sealed
Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes
Wrong – Hole has not been air sealed
Wrong – Hole was not neatly cut with a saw, making it difficult to seal
Wrong – Holes have been cut larger than needed, making it difficult to seal