Plug can be divided into: headphone plug, DC plug, audio plug, USB plug, video plug, microphone plug, charger plug, mobile phone plug, etc.

In the world, the plugs of household appliances are divided into three categories: class I: electrical appliances refer to electrical appliances with only one layer of insulation measures, which must be equipped with leakage protector and grounding protection (that is, three pin plug). Such as air conditioning, machine tools, motors, etc. Class II: electrical appliances with double insulation measures, to add leakage protector, can not be grounded protection (that is, can use two pin plug). Such as: TV, electric fan, desk lamp, induction cooker, electric ceramic stove, etc. Three categories: electrical appliances are electrical appliances with safe voltage, which are generally 12-36v, such as mobile phones, laptops, etc. Plugs are classified as UL / cul, VDE, CCC, T-Mark, SAA, BSI, PSB, SABS, PSE, SNI, UC, etc.

The plug is divided into plug, socket and connector according to structure. Plug and socket are generally divided into two pole plug and two pole grounding plug. Current through, so here to tell you, as long as any electrical appliances are not used, you should pull out the plug to save electricity.

National plug certification abbreviation China: CCC us: UL / cul Canada: CSA UK: BS Netherlands: Kema Belgium: CEBEC Switzerland: sev Germany: VDE France: NF Italy: IMQ Norway: n Denmark: demko Finland: fi South Africa: SABS Sweden: s Japan: PSE Korea: KTL Australia: SAA New Zealand: Sanz Argentina: IRAM Brazil: inmentro