| has gloss | eng: A cheater plug, AC ground lifter or three-prong/two-prong adapter is an adapter that allows a NEMA 5-15P grounding-type mains plug (three prongs) to connect to a NEMA 1-15R non-grounding receptacle (two slots). The use of such an adapter avoids the need to replace receptacles but is less safe than properly grounding the connected appliance. In locations where three-prong outlets are available, such adapters have been used to avoid ground loops in audio systems. This practice has been condemned as recklessly disregarding electrical safety. In 1969 Underwriters Laboratories mandated three-prong plugs on small appliances for safety. |
