1. Fokotuʻutuʻu ʻo e puha tufakiʻanga ʻo e mama: ʻI he angamahení, ʻOku kau ai ha tefitoʻi fetongi ʻe taha mo e lahi ʻo e kolo.
2. Fehokotakiʻanga malohi: ʻOku fehokotaki ʻa e maʻuʻanga ivi mo e tafaʻaki ʻo e tefitoʻi fetongi.
3. Header ʻo e kolo: All branch switches are connected in parallel to the load side of the main switch.
4. Branch Load Connection: Each branch switch is connected to its respective load.
5. Fakauaea: The wiring should be firm and reliable.