The third wire: using three-prong plugs with two-prong adaptersBankston, Jr., Joseph D
Pincer type earth connector for three=phase supply cables - makes contact central neutral wire through three-prong screw-action clampThe cable connecting device comprises a central plate shaped with two circular indentations separated by a curved-end tongue section which has a concave groove so that...
Electric socket of plug-in type, with the prong - a protecting, earthing contact - for the three-wire, single-phase, low-voltage installationsthe subject of the invention is the electric wtyczkowe with bolcem installations trzy\\u017cy\\u0142owych, single-phase low voltage.nest called \"...
US3205436 * 1962年2月2日 1965年9月7日 Thomas M Donahue Method and apparatus for measuring impedance increases in the ground or protective ground wires leading to three-wire prong power receptaclesUS3205436 * Feb 2, 1962 Sep 7, 1965 Thomas M Donahue Method and apparatus for measuring impedance...
Electric socket of plug-in type, with the prong - a protecting, earthing contact - for the three-wire, single-phase, low-voltage installationsthe subject of the invention is the electric wtyczkowe with bolcem installations trzy\\u017cy\\u0142owych, single-phase low voltage.nest called \"...
Pincer type earth connector for three=phase supply cables - makes contact central neutral wire through three-prong screw-action clampThe cable connecting device comprises a central plate shaped with two circular indentations separated by a curved-end tongue section which has a concave groove so that...