Cén Leibhéal Cruthúnas Pléasctha is airde, BT4 nó BT6

De réir na gcaighdeán náisiúnta maidir le cosaint pléascadh leictreach, tagann BT4 agus BT6 faoi Aicme IIB.

Grúpa teocht de threalamh leictreach	Teocht dromchla uasta incheadaithe trealaimh leictrigh (℃)	Teocht adhainte gáis/ghala (℃)	Leibhéil teochta gléas is infheidhme
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

ach, the ‘T’ classification pertains to the temperature rating of explosion-proof electrical devices. Ní mór d’fheistí atá rangaithe mar T6 teocht dromchla nach airde ná 85°C a choinneáil, Ní féidir le T5 dul thar 100°C, and T4 must not surpass 135°C.

The lower a device’s maximum surface teocht, the less likely it is to ignite atmospheric gases, thereby enhancing safety. Dá bharr sin, the explosion-proof rating of BT6 exceeds that of BT4.