Hauv kev siv hluav taws xob txhua hnub, cov xwm txheej ncaj qha ntawm cov hluav taws xob siab suav nrog cov kev laus hluav taws xob rwb thaiv tsev thiab txo lub neej. Yog hais tias lub voltage tshaj lub cert ntau, nws tuaj yeem cuam tshuam ncaj qha hluav taws xob xws li TVs, dvds, thiab ntau dua, muaj cov khoom phom sij lossis txawm tias hluav taws kub nyhiab. Ntawm qhov tod tes, lub voltage tsis tshua muaj peev xwm ua rau muaj nyob rau hauv ntws tam sim no vim yog lub zog ruaj khov ntawm lub nra, uas tuaj yeem ua rau kev puas tsuaj tseem ceeb rau cov neeg muaj zog thiab cua compressors.
Cov piv txwv ntawm cov khoom siv hluav taws xob cuam tshuam nrog kev voltage qis xws li tub yees tub yees, khov, dej twj, ntxhua khaub ncaws, tshuab ntxhua khaub ncaws, thiab cua txias.
Peb cov kev tiv thaiv kev tiv thaiv cov khoom lag luam muaj kev lag luam thiab kev daws teeb meem los daws cov teebmeem no. Noj ib tus 220V tiv thaiv ua piv txwv, peb muaj tus nqi preset, cia peb hais tias lub Hoobkas tsim muaj ntau yam yog 165-250V. Thaum lub zog hluav taws xob poob qis dua 165v lossis 250V, peb cov khoom yuav txiav tawm cov khoom siv hluav taws xob tiv thaiv hluav taws xob cov khoom siv hluav taws xob. Thaum lub voltage rov qab los rau cov teeb meem, lub zog hluav taws xob yuav thim rov qab.