Ua kamaʻāina paha nā kānaka a pau i nā mika ikehu uila. I kēia mau lā, hoʻohana pinepine ʻia nā mika akamai e ana a hoʻopaʻa kālā i ka uila o ka hale. Inā ʻoe e nānā pono, e ʻike ʻoe aia kahi ʻāpana 5 (60) i kākau ʻia ma ke kūlana koʻikoʻi o ka mika ikehu uila.

Eia kekahi laʻana, ka palena ma ka pōʻai ʻulaʻula ma ke kiʻi ma luna: 5 (60) A. Ke nānā aku nei mākou i ka ʻāpana, ʻike mākou ua kākau ʻia ʻo ia me ke au, no laila he aha ka pilina ma waena o kēia mau au ʻelua? He aha ka hana inā ʻoi aku ka nui o ke au? E kamaʻilio kākou e pili ana i nā kaha ʻelua e pili ana i nā pale o waho (5) a me nā pale o loko (60).
ʻO kēia ma nā brackets
ʻO ka manawa i loko o nā pale - 60A i ka laʻana, e pili ana i ka helu kiʻekiʻe o kēia manawa o ka mika ikehu. ʻOkoʻa i nā mea hana ʻē aʻe, ʻo ke ʻano helu o ka mita ikehu uila e hoʻopilikia nui ʻia e nā kumu kaiapuni, no laila ke waiho ʻia kahi palena i ka wā e haʻalele ai i ka hale hana - ʻo ka helu kiʻekiʻe loa o kēia manawa he 120% o ka manawa i kaha ʻia. No laila, inā he 60 ka helu i loko o nā pale, ʻo 72A kona helu kiʻekiʻe loa - inā ʻaʻole ia he wahi paʻakikī loa, ʻaʻole hiki i ka 20%. No laila, ʻo ka helu kiʻekiʻe loa o ka mika i kaha ʻia me 60A ma kahi o 66A ma ka hoʻohana maoli.
He aha ka hopena inā ʻoi aku kēia waiwai? ʻO ka pane he ana pololei ʻole - ʻoi aku paha, ʻoi aku paha.
ʻO nā pale waho o kēia manawa
ʻO ka 5 ma waho o nā pale maʻaneʻi ua kapaʻiaʻo ke kumu kumu, i kapaʻia hoʻiʻo ka calibration current. Hoʻoholo ʻia e ke ʻano hoʻomaka o ka mika ikehu uila - ka waiwai liʻiliʻi o kēia manawa e hiki ai i ka mīkini uila ke hoʻololi mau a ana mau. ʻO ka hoʻomaka ʻana o kahi mika akamai maʻamau he 0.4% o ka manawa i helu ʻia. ʻO ia hoʻi, e hoʻopiʻi ʻia kahi mika me ka manawa i helu ʻia o 5A inā lōʻihi ka manawa o ke kaapuni a hiki i 0.02A ke hoʻohana ʻia. E loa'a ka lakio ma waena o ka au i helu 'ia a me ka au i helu 'ia, e like me 5 (60) A, he pilina 4 manawa. Kapa ʻia kēia lākiō ʻo "load width". ʻO ka maʻamau, he 2 manawa, 4 manawa, 6 manawa, 8 manawa a ʻoi aku paha ma mua o ʻumi mau manawa - ʻoi aku ka nui o ka laula haʻahaʻa, ʻoi aku ka ikaika o ka pae ʻenehana i koi ʻia, a ʻoi aku ka kiʻekiʻe o ke kumukūʻai o ka mika.
No laila, li'ili'i ka pili o nā helu ma waho o nā pale me ka ho'ohana maoli 'ia e ka mea ho'ohana—'a'ole e pili ana ka nui a emi'ole o kēia waiwai i ke ana o ka mika. ʻElua mau hiʻohiʻona i hoʻopili ʻia e ka calibration current: ke kumukūʻai o ka mika (e pili ana i ka laula haʻahaʻa) a me ka manawa hoʻomaka (helu ʻia e ka calibration current).