Ni gbogbo ọdun mẹta, awọn ọmọ ẹgbẹ ti National Fire Protection Association (NFPA) yoo ṣe awọn ipade lati ṣe atunyẹwo, yipada ati fikun koodu National Electrical Code (NEC), tabi NFPA 70, awọn ibeere lati jẹki aabo itanna ni ibugbe, iṣowo ati awọn ohun elo ile-iṣẹ, eyi yoo mu itanna pọ si ...
Ka siwaju