Kemgbe ihe mbụ achọrọ ya afọ 50 gara aga, Ground Fault Circuit Interrupter (GFCI) enweela ọtụtụ ndozi imewe iji bulie nchebe ndị ọrụ.Emere mgbanwe ndị a site na ntinye sitere na otu dị ka Consumer Products Safety Commission (CPSC), National Electric Manufacturers Association (NEMA), na Underwriters Laboratories.
Otu n'ime ụkpụrụ ndị a, UL 943, na-enye ihe achọrọ kpọmkwem maka ndị na-egbochi sekit-mmejọ nke na-agbaso koodu ntinye eletriki nke Canada, Mexico, na United States.Na June 2015, UL meziri njirisi 943 ha iji chọọ ka nkeji niile arụnyere na-adịgide adịgide (dị ka ebe nchekwa) gụnyere ọrụ nlekota onwe.Ndị na-emepụta ihe nwere ike ree ngwaahịa dị ugbu a n'aka ndị ahịa ha, ebumnuche bụ na ka ewepụrụ nkeji ndị agadi, ndị na-anọchi anya ha ga-etinye usoro nchekwa a ọzọ.
Nleba anya na akpaaka, nke a makwaara dị ka nyocha onwe onye, na-ezo aka na usoro na-eme ka otu unit na-arụ ọrụ nke ọma site n'ịkwado ozugbo na nghọta na ikike njem na-arụ ọrụ.Nnwale onwe onye a na-achọpụta na a na-anwale GFCI mgbe niile, nke bụ ihe ndị ọrụ na-eme na-emekarị.Ọ bụrụ na nnwale onwe ya daa, ọtụtụ GFCI na-egosipụtakwa ihe ngosi njedebe nke ndụ iji mee ka onye ọrụ njedebe mara mgbe ngalaba ahụ chọrọ nnọchi.
Akụkụ nke abụọ nke UL 943 emelitere nyere iwu ka nchekwa Mis-waya na-ebugharị Reverse Line ugboro ugboro.Ntughari ahịrị-Load na-egbochi ike nke unit ahụ ma gbochie ịtọgharịa ya mgbe enwere esemokwu na wiring.Ma a na-eji unit ahụ na nke mbụ ma ọ bụ na-arụnyeghachi ya, wiwi ọ bụla na-ezighi ezi na GFCI nke na-anwale onwe ya ga-ebute mfu ọkụ na/ma ọ bụ enweghị ike ịtọgharịa ngwa ahụ.
Dị ka nke Mee 5th, 2021, UL 943 chọrọ ka ngwaahịa ndị a na-eji na ngwa mbugharị (In-line GFCI cordsets and Portable Distribution Units, dịka ọmụmaatụ) tinye teknụzụ nnwale akpaaka iji bulie onye ọrụ na nchekwa ebe ọrụ.
Oge nzipu: Sep-05-2022