Wehewehe Pōkole:

1. Hoʻohana: No ka pale ʻana i nā uaea a me nā lako hana mai ka hoʻouka nui ʻana a me ke kaapuni pōkole.

2. Nā lula laulā no ke koho ʻana iā MCB.

a. ʻIkepili loea o ka pūnaewele ma kahi i noʻonoʻo ʻia: ʻO nā ʻōnaehana hoʻoheheʻe honua, ke au pōkole ma ke kiko hoʻonohonoho o ka mea haki kaapuni, pono e emi mau ma mua o ka hiki ke haki o kēia hāmeʻa, ka uila maʻamau o ka pūnaewele.

b. Aia he 3 mau ʻano piʻo no ka hana magnetic: pale piʻo B (3-5 In) a me ka kaohi ʻana o nā kaapuni e kūʻē i nā kaula lōʻihi ma nā ʻōnaehana TN a me IT.

c. pale (5-10 In) a me ka kaohi ʻana o nā kaapuni e kūʻē i nā overloads a me nā pōkole; pale no nā ukana resistive a me inductive me ke au inrush haʻahaʻa.

Ka pale ʻana o Dcurve (10-20 In) a me ka kaohi ʻana i nā kaapuni e kūʻē i nā overloads a me nā pōkole; ka pale ʻana no nā kaapuni e hoʻolako ana i nā ukana me ke au inrush kiʻekiʻe ma ka pani ʻana o ke kaapuni (nā mea hoʻololi LV/LV, nā kukui haki).