Mukakhala kunja kugula zipangizo zamagetsi kuti mupange pakhomo lanu, mndandanda wa UL ndi njira yabwino kwambiri yowonetsetsera kuti muli otetezeka, zopangidwa bwino ndi zopangidwa. Chida chimene chimakhala ndi sitampu ya mndandanda wa UL chayesedwa ndi kutsimikiziridwa kuti chikukumana ndi miyezo ya UL pofuna chitetezo. Kotero, kodi UL, ndi chiwerengero cha UL chikutanthauzanji?
Chipatala Choyesera ndi Dzina Lina Lililonse
UL poyamba, ndipo nthawi zambiri, amadziwika kuti Underwriters Laboratories.
Sichidumpha bwino lilime. Mwina ndicho chifukwa chake bungwe lagonjetsa dzina lathunthu potsutsa kufotokozedwa bwino. Zimandigwirira ntchito. UL ndiwotchuka ku mayiko omwe akuyesedwa ku United States Amayesanso mankhwala a Canada.
Kuyeza kwa UL kumaonetsetsa kuti waya akulondola, zipangizo zingathe kuthandizira kuchuluka kwa zomwe akunenazo, ndipo malonda amamangidwa bwino kuti apereke ntchito yotetezeka m'nyumba mwanu. Kwa zaka zoposa zana, bungwe ili lopanda phindu lapanga miyezo yoposa 1,000 ya chitetezo. Webusaiti ya UL ndi malo abwino kuti mudziwe zambiri zokhudza bungwe ndi zomwe akuchita.
Kodi UL Listing Works
Ndizosavuta: ojambula otchuka amapereka mankhwala awo kwa kuyesa UL. Ngati mankhwala atha kuyesa, wopanga amaloledwa kudula mankhwalawo ndi chizindikiro cha UL. Yang'anani kumbuyo kwa kusinthana kulikonse, kapu, babu ndi zinthu zina zamagetsi ndipo mudzawona chizindikiro.
Kugonjera kukayezetsa ndiko mwaufulu, koma chifukwa chakuti magetsi ambiri amagwiritsa ntchito maulendo a UL alipo, opanga ali ndi zolimbikitsa zambiri kuti agulitse malonda awo. Sizinthu zonse zomwe zingakhale kapena ziyenera kukhala, zolembedwa. Kwazinthu zina palibe zogwirizana ndi UL; Kwa ena, mankhwalawa amangokhala osatetezeka kuti asatchulidwe konse.
Ndicho chifukwa chake sikutheka kupeza piritsi yowonjezera ya vinyl ndi UL listing; iwo sali otetezeka basi.
Chifukwa Chake Ndikofunika Kufufuza
Kwa wogula, kuyang'ana kwa chizindikiro cha UL ndi njira yophweka yolekanitsira zinthu zabwino kuchokera ku zopanda pake. Ngati mukuyerekezera zosintha ziwiri zofanana ndikuzindikiritsa kuti wina amanyamula chizindikiro UL pamene wina sali, muyenera kufunsa wophunzirayo, bwanji? Mwayi ndikutenga mtengo wotsika kumene sikungakwaniritse miyezo ya UL ngakhale ngati wopanga akusamalira mokwanira kuti apereke mayesero. Kuti chisankho ichi chikhale chosavuta, Code Code National Electrical Code (NEC), imafuna kugwiritsa ntchito mankhwala a UL akapezeka. Mwa kuyankhula kwina, ngati pali zotsalira za UL mu gawo lopatsidwa, simungagwiritse ntchito mankhwala kuchokera m'gulu lomwe sali olembedwa. Kulemba mawu nthawi zambiri kumatanthawuzira kuti ziyeneretso zikhale "zolembedwa." Izi zikutanthauza kuti UL akulemba, ngakhale pali ma laboratories ena omwe amazindikiritsidwa padziko lonse, monga Intertek ndi CSA Group (ku Canada).