● Ua hana ʻia nā ʻāpana koʻikoʻi o ka resistors i nā mea insulating a me nā mea wela kiʻekiʻe, e like me ke ʻano o ka pale pale, e ʻeha like ʻia me nā uea kila kiʻekiʻe. ʻO ka pahu alumini metala i hoʻopaʻa ʻia me ka paʻi uila non-combustible kiʻekiʻe, i hui pū ʻia ka pūpū alumini a me nā ʻāpana koʻikoʻi kūpaʻa i loko o kahi mea paʻa, ʻaʻole i hoʻopilikia ʻia e ka ea o waho, ka haʻalulu a me ka lepo, me ke kūpaʻa kiʻekiʻe a me ka conductivity thermal.
● Hana ʻia ka pūpū alumini me ka alumini 6063 ʻoihana kiʻekiʻe, a ʻo ka ʻili
anodized wela kiʻekiʻe e hoʻokō i nā hiʻohiʻona nani a me ka hoʻopau wela nui.
● Hoʻohana ʻia ka insulation ma o ke kaʻina hana wela kiʻekiʻe.