Powerwall 3 achieves this by supporting up to 20 kW DC of solar and providing up to 11. It has the ability to start heavy loads rated up to 185 LRA, meaning a single unit can support the power needs of most homes. This is essential for sizing services, panels, and feeders per NEC Article 220. For a 2,000 sq ft home, this equals 6,000 VA. Powerwall 3 Expansions make it easier and more. A distribution board is the combination of protective devices such as Main switch, MCB, MCCB, RCD, RCBO, Isolator, Fuses and Switches etc. Ga Porcelain Cutouts in 160 KVA / 315 KVA box to protect outgoing circuits.