And electrical equipment of the country United States Start with the first time since 1897 and has been revised every 3 years with a design standard.The standard installation of the NEC. Has spread into the country Thailand and electrical engineer, even though the NEC is very good, which is different from the system that are within several countries Thailand together as follows:Frequency: 60Hz: 50Hz USA/ThailandUSA: 208/120V electric system, 480/277V/T hailand: 380/220V, 400/230V.Electrical wires AWG/USA: Thailand: sq.mmUSA dimensions: Inch, Feet, Thailand: m. mm./.Thailand: USA: Pound weight/Kilogram
การแปล กรุณารอสักครู่..
