O fea le Tulaga e Fa'asao Pa'u e Sili Atu, BT4 poʻo BT6

E tusa ai ma tulaga faʻale-malo mo le puipuiga o le pa eletise, e pau uma BT4 ma BT6 i lalo ole Vasega IIB.

Vaega vevela o meafaigaluega eletise	O le maualuga o le vevela faʻatagaina o luga o mea eletise (℃)	Kesi/ausa vevela vevela (℃)	Fa'atatau le maualuga ole vevela ole masini
T1	450	＞450	T1~T6
T2	300	＞300	T2~T6
T3	200	＞200	T3~T6
T4	135	＞135	T4~T6
T5	100	＞100	T5~T6
T6	85	＞85	T6

Peitai, the ‘T’ classification pertains to the temperature rating of explosion-proof electrical devices. O masini o lo'o fa'avasegaina o le T6 e tatau ona fa'atumauina le vevela o le fogaeleele e le sili atu i le 85°C, T5 e le tatau ona sili atu i le 100°C, and T4 must not surpass 135°C.

The lower a device’s maximum surface vevela, the less likely it is to ignite atmospheric gases, thereby enhancing safety. O lea la, the explosion-proof rating of BT6 exceeds that of BT4.