Iyo National Electrical Code (NEC) inovandudza kamwe chete makore matatu ega ega.Muchinyorwa chino, tichaunza shanduko ina dzeiyi kodhi kutenderera (2023 edition yeNEC) inobata mwenje ndeiyi inotevera:
Horticultural Lighting
Kuti udzivise dzimwe njodzi dzinogona kuitika muindasitiri yekuvhenekesa mwenje, Sec.410.184 inojekesa kuti kuchengetedza kweGFCI kunodiwa uko mwenje wehorticultural wakabatana netambo dzinochinjika uchishandisa zvinopatsanurika zvinobatanidza kana mapulagi ekunamatira.Chitsva Chitsva chinobvumira michina yekuvhenekesa inopihwa maseketi anopfuura 150V kuti ichengetedzwe ine yakanyorwa yakakosha-chinangwa-pasi-fault circuit interrupter (GFCI) inofamba pa20mA pachinzvimbo che6mA.
Wiring uye Equipment Yakaiswa Pamusoro Nengozi (Yakarongwa) Nzvimbo
Chikamu 511.17 chine shanduko yakakosha sezvo ikozvino yarongedzerwa kuita runyoro fomati ine zvimwe zvinodiwa kune zvakanyorwa mafittings uye midziyo yekumisa conductor (EGCs) yakawedzerwa kumusanganiswa.Izwi rekuti "Kirasi I" rinotsiviwa ne"Hazardous (Classified)" munzvimbo shanu, kusanganisira zita reChikamu ichi, sezvo iyo zone classification system isingachashandise zita rekuti "Kirasi I".Ichi Chikamu chakarongedzerwa zvakare kubva pandima refu kuita zvipfumbamwe zvinyorwa zvekushandisa, uye zvinodiwa zvakawedzerwa kune dzakawanda dzenzira dzekuisa waya.
Receptacles, Luminaires, uye Swichi
Zvinodiwa zvepasi kukanganisa circuit interrupterkuchengetedzwa kwemidziyo mu (A) (4) yakawedzerwa kutenderera uku muSec.680.22 kusanganisa zvese zvigadziro zvakapihwa 60A kana zvishoma mukati me20 ft yemadziro edziva.Izvi zvakamboshanda kune 15A uye 20A, 125V zvigadziko.Ichi Chikamu chinoda kuchengetedzwa kweGFCI kune chaiyo michina yakaiswa munzvimbo iri pakati pe5 ft uye 10 ft yakachinjika kubva mukati memadziro edziva zvakare.Mutauro mutsva mu(B)(4) unowedzera dziviriro inodiwa nekuwedzera chinodiwa cheSPGFCI chinobvumira michina inoshanda pamusoro pe150V kusvika pasi kuti ichengetedzwewo.
Kirasi-2-Powered Emergency Lighting Systems
Sec.700.11 yeClass 2 wiring inopa zvinodiwa kune aya masisitimu ekuvhenekesa.Ichi Chikamu chitsva chinogadzirisa matekinoroji akadai sePoE uye mamwe masisitimu ekuvhenekesa echimbichimbi anoshandisa Class 2 simba.Mimwe mitemo mune ino Chinyorwa kero mutsara voltage masisitimu, uye Ichi chitsva Chikamu chinopa zvinodiwa kune yakaderera-voltage emergency masisitimu.
Nguva yekutumira: Kubvumbi-04-2023