1. Cov phuam qhwv hluav taws xob tsuas yog siv rau ziab cov ntaub ntxhua khaub ncaws, thiab nws yog txwv tsis pub siv cov khoom no rau cua sov thiab ziab cov ntaub lo lo ntxhuav.
2. Lub khib nyiab hluav taws xob yuav tsum tau nruab nrog cov kab hluav taws xob ruaj khov thiab cov cuab yeej txiav hluav taws xob, uas yuav tsum tau txuas nrog cov cuab yeej tiv thaiv overcurrent hauv chav.
3. Nws yog txwv tsis pub siv cov khoom cua sov lossis lub plhaub ntawm cov ntaub so ntswg hluav taws xob thaum nws puas lawm.
4. Cov phuam da dej hluav taws xob yuav tsum tau muab tso rau hauv daim duab peb sab thiab ib txoj hlua hluav taws xob peb-core kom tsis txhob muaj kev nyab xeeb thiab kev phom sij.
5. Cov phuam da dej hluav taws xob yuav tsum tsis txhob siv los ua cov khoom ua si los ntawm cov menyuam yaus, thiab cov menyuam yaus yuav tsum tsis txhob siv yam tsis muaj niam txiv saib xyuas.