Asambodo CB
Sistemu CB (sistemụ IEC maka nnwale nkwekọ na asambodo ngwaahịa eletrik) bụ sistemụ mba ụwa nke IECEE na-arụ. Otu asambodo nke obodo ọ bụla so na IECEE na-anwale arụmọrụ nchekwa nke ngwaahịa eletrik dabere na ụkpụrụ IEC. Nsonaazụ ule a bụ akụkọ nyocha CB na CB Asambodo ule bụ usoro nnabata n'etiti mba ndị otu IECEE. Ebumnuche bụ ibelata ihe mgbochi azụmaahịa mba ụwa nke ga-enwerịrị asambodo ma ọ bụ nkwenye nke mba dị iche iche.
Asambodo CSA
CSA bụ mbiri nke Canadian Standards Association. E hiwere ya na 1919 ma bụrụ ọgbakọ mbụ na-anaghị akwụ ụgwọ nke Canada raara onwe ya nye na mmepe nke ụkpụrụ ụlọ ọrụ. Ngwaahịa dị ka ngwa eletrọnịkị na ngwa eletrik a na-ere n'ahịa North America kwesịrị inweta asambodo nchekwa. CSA bụ ụlọ ọrụ asambodo nchekwa kachasị na Canada na otu n'ime ụlọ ọrụ asambodo nchekwa ama ama n'ụwa. Ọ nwere ike ịnye asambodo nchekwa maka ụdị ngwaahịa niile dị na igwe, ihe ụlọ, ngwa eletriki, akụrụngwa kọmputa, akụrụngwa ụlọ ọrụ, nchekwa gburugburu ebe obibi, nchekwa ọkụ ahụike, egwuregwu na ntụrụndụ.
