'O ke koho'ana i kahi māhele o ke ke'a no ka manawa i kēia manawa he hana ma'alahi ia, akā he mea ko'iko'i

Kēlā me kēia palapala hōʻoia no electrician e aʻo i ka waiwai o ka mea manao e haawe ma luna o ka pilina hiki koke e i waeʻia mahele o kaʻikena uwea. 'A'ole pa'akikī ka hana, ua ho'oholo'ia e ho'oholo i kekahi o nā kula ho'ona'auao, mai kahi mua a'oi aku. I ka hana'ana pēlā, pono e ho'omana'o'ia i ke koho'ana i ke kaulaea,'oi aku ka maika'i o ke kuhi hewa ma mua o ka'ao'ao li'ili'i.

Ma nā'oihana'oihana, ua hana'ia nā hana a pau e ka po'e'oihana i loa'a ka ho'ona'auao'eneke'ikepili kūikawā, no laila,'a'ole i ho'okumu'ia nā palena o ka pūnaewele ma muli o ke kumukānāwai "kūkulu mākou i nā mea i loa'a iā mākou", akā i ho'onui'ia, e no'ono'o i ka ho'emi'ana o nā koina akā ke mālama nei i nā kānāwai tech. Aia mau maʻamau rula o ka pou manaʻo iʻaneʻi, a me ka mea, e alakaʻiʻia e nā nā kānakaʻenehana, e koho pauku o kaʻikena uwea. 'O ka PUE ('O nā'ōlelo no ka ho'okomo'ia'ana o nā ke'ena kelepona)'o ia ka puke kuhikuhi no kēlā me kēia elele-ho'ohoahoa.

Pilikia e ala mai ka wā kanaka e ole i lawa palapala hōʻoia, hoao mai e hana i mea hoʻonoho ai pilina hakahaka i loko o kā lākou mau home ai 'ole ma o ka neoneo. 'O ka koho'ana o ka māhele'iliahi he'oihana kuleana. Ke hana hewa nei, ma ka maika'i, hiki iā'oe ke kūpono i ka pono e wāwahi i ka pono o ka plaster a ho'ololi i ka leka uila. Ma nā koho maika'i loa e like me ke ahi,'a'ole makemake'oe e ha'i.

No ka ho'omaopopo'ana i nā hopena o ka hewa i ke koho'ana i ke kaulaunu, pono'oe e ho'oma'ama'a iā'oe iho me nā kulekele kūpono e pili ana i ka papa hana physics.

No laila:

Ka uila ia'ku o ke alakaʻi mele mea pololei hapaʻauhau i kona loa a me ka resistivity. 'O ka'ao'ao cross, ma kekahi'ao'ao, e ho'opilikia iā ia ma ka'ao'ao hope:

R = (ρ x L) / S,

'Auhea:

• R - kumukuai o ka resistivity, ana i loko o ohms;
• ρ - resistivity, a laila ka ia'ku o ke alakaʻi mele i loko o ka mea o 1 mm o i 1 m a me ka pauku ^2;
• L - ka lō'ihi o ka wiring, m;
• S - alakaʻi mele keʻa-mahele wahi mm o ^2.

Ke resistivity kekahi i waena o kekahi mau mea hiki ke hooheheeia. No ka laʻana, no ke kālā, ia mea ma kahi o 0,016 Ohm x mm o ² / m + ^2, ma ka platinum - 0,1, a me ka mea o ke gula - 0,02. Akā,'o ka koho'ana o ka māhele o ke alahaka no kēia manawa,'a'ole ia e komo i ka ho'ohana'ana i nā mea kau nui (ua maopopo ke kumu).

Ano e pili ana i ka ukana. I mea e hewa'ole ai i ka nui o ka manawa e holo nei i nā wili, ua lawa ia e'ike i ke'ano ma'alahi o ka'ōlelo a Ohm no ke kaapuni me ka ho'ouka hana:

W = U x I,

'Auhea:

• W ka mana i ana i Watts;
• 'O U ka pūnaewele o ka pūnaewele (iā 220 volts);
• 'O wau ke kumu kū'ai o kēia manawa (Ampere).

'O ka'oia'i'o,'o ka Volt-Amperes he'oko'a ia i nā watts, akā ma kahi o nā ke'ena noho, kahi e ho'omau'ia ai nā kaumaha'oihana (nā kukui ahi, nā uila uila, a me nā mea'ē a'e), hiki ke ha'alele'ia kēia'oko'a.

Ma ka ho'ouka'ana i ka mana o nā pono uila, hiki iā'oe ke ho'onohonoho i ka waiwai o ka ukana i Watts, kahi e koho ai i ka māhele o ke kele i kēia manawa.

A laila ua ma'alahi nā mea a pau. No ka mea,'a'ole hiki ke ho'ohana'ia ka leka gula a me ke aho platinum e Abramovich,'o kekahi mau metala,'oi aku ka lō'ihi. Inā hiki ke koho'ia no kahi kelepuni keleawe maika'i, a laila hiki i kēlā me kēia mīkini pāka'i (ai'ole e like me nā elele e hō'ike ana i ka "square") hiki ke pi'i i ka 10 amp. 'O nā'āpana aluminika i'oi aku ke'ano ha'aha'a, 8 ampēne, akā he mea'u'uku.

Ma ke'ano he kūlana, ke koho'ia'ana o ka māhele o ka māhele o kēia kahe i kēia mau hale i hana'ia no ke ala alumina me kahi'āpana o ho'okahi a me ka hapa hapalua (kumu) a me ka hapa hapalua (kukui). Mea hāpai mīkini 'ole ai i kekahi mana-ia e hoopau ana nā mea kūʻai mai e noi mai ana kaawale uwea bushings alakaʻi mele pauku o 2,5 mm o ^2.

He mea nui e ho'omana'o he hiki'ole ke ho'ohui i ke kaula kila me ke kaula alumini. 'O ia'ano ho'ololi'ana i ka manawa e pau ai nā mea ho'oholo.