Electrical plug and socket assembly for a safety grounded tree

摘要: An artificial lighted tree may have power routed through the trunk and three-wire safety grounding. A system method are provided for preventing inadvertent electrical connection of a standard plug to female socket an cord tree. The apparatus comprise non-standard on three-prong grounded cord. includes raised side walls with vertical half rounds in sidewalls mate two-prong non-polarized male plug, customized include mating grooves cut into top bottom lips. Advantageously, use paired functions prevent by plugs thereby permitting three wire having lower amperage rating than UL approved