ʻO ke kiʻekiʻe o ka Pahū Pahū, CT2 a i ʻole CT4

Ua ʻike ʻia ʻo CT4 ka paʻa i ka helu pahū-hōʻike kiʻekiʻe. ʻIke ʻia, Hōʻike nā motika pahū i ka inoa IICT4 akā nele i ka māka IICT2.

Ka pae wela IEC/EN/GB 3836	ʻO ka wela ili kiʻekiʻe loa o nā mea hana T [℃]	ʻO ka mahana wela o nā mea hiki ke puhi [℃]
T1	450	T＞450
T2	300	450≥T＞300
T3	200	300≥T＞200
T4	135	200≥T＞135
T5	100	135≥T＞100
T6	85	100≥T＞8

Loaʻa kēia ʻokoʻa mai ka hoʻokaʻawale ʻana o ka wela o nā mea uila pahū: Hoʻolālā ʻia nā mea hana T4 e mālama i ka wela o ka ʻili ma lalo o 135°C, whereas T2 devices allow a maximum surface temperature up to 300°C, deemed excessively risky.

No laila, CT4 is the preferred choice; CT2 is generally avoided.