Txhua peb lub xyoos, cov tswv cuab ntawm National Fire Protection Association (NFPA) yuav tuav cov rooj sib tham los tshuaj xyuas, hloov kho thiab ntxiv National Electrical Code (NEC), lossis NFPA 70, yuav tsum tau ua kom muaj kev nyab xeeb hluav taws xob hauv tsev, kev lag luam thiab cov khoom siv hauv tsev, qhov no yuav nce cov hluav taws xob ...
Nyeem ntxiv