E kewara ọkọnọ ike isi ụwa niile ụzọ abụọ: 220 ~ 240V / 50Hz bụ isi ihe na-ekpuchi China (otu-usoro220V, nke nwere usoro atọ 380V), Yuropu (nke nwere usoro otu 230V, nke nwere usoro atọ 400V), United Kingdom (240V/415V), Australia na New Zealand, Ndịda Ọwụwa Anyanwụ Eshia na mba Afrịka. Sistemụ obere voltaji 100-127V: US na Canada nke nwere usoro otu 120V, nke nwere usoro atọ 208/240V, 60Hz; nke nwere usoro otu 100V na Japan, 50/60Hz maka akụkụ ọwụwa anyanwụ na ọdịda anyanwụ, na-ebute nchekwa ụzọ ma nwee obere ihe mkpuchi.
Ụkpụrụ ihe na nchekwa: Efere ígwè China (GB7251) nke a na-akpọ "cold voltaji"/ígwè anaghị agba nchara nke ≥1.5mm maka ahụ igbe, akụkụ ihe mkpuchi na-egbochi ire ọkụ CTI≥600, iguzogide ala ≤0.1Ω, IP2X dị n'ime ụlọ, IP54 dị n'èzí, asambodo mmanye CCC. Ebe obibi ígwè nke European Union (CE/IEC) dị oke ma na-anaghị agba nchara, akụkụ ndị na-abụghị ọla bụ UL94 V-0 na-egbochi ire ọkụ, ọ na-agbasokwa ụkpụrụ nchekwa gburugburu ebe obibi EMC na RoHS nke ọma, yana ụkpụrụ nchekwa eletriki dị elu. Ụkpụrụ America (UL) dakọtara na sistemụ obere voltaji, na-emesi ike iguzogide ọkụ na iguzogide mmetụta. Ihe mkpuchi plastik ahụ nwere ọkwa mgbochi ire ọkụ siri ike, a kọwakwara iwu maka ịgba ala na ịgbawa. Ụkpụrụ Japan dakọtara na obere voltaji 100V, igbe ahụ dị fechaa, ihe mkpuchi na ihe ndị achọrọ maka iguzogide okpomọkụ dị nro, ọkwa nchekwa dịkwa mma maka ojiji n'ime ụlọ. Mba niile amachibidoro iji ihe ndị nwere ike ire ọkụ, nke ga-emezu ihe achọrọ dịka mgbochi ire ere, ime ka ala dị n'ala, nchekwa mkpuchi na asambodo mpaghara.