He aha ka uwea mai ka pākaukau a i ka mea hoʻomaka?
Nā mea
Inā ʻaʻole ikaika ka pilina ma waena o ka pākaukau o ke kaʻa a me ka mea hoʻomaka, pilikia paha ʻoe e hoʻomaka. He mea nui loa ka hoʻohui ʻana i ka pākaukau a me ka mea hoʻomaka me ka nui uea kūpono. No laila, ʻo ia ke kumu i kēia lā e hāʻawi wau iā ʻoe i kekahi mau ʻōlelo aʻoaʻo e pili ana i ke ana o ka uea e hoʻohana ai mai kāu pākaukau a i kāu hoʻomaka.
Ma keʻano laulā, no ka hana kūpono e hahai i nā ana ma lalo no ka nui kūpono o ke kaula hoʻomaka pākaukau.
- E hoʻohana i ka uea anana 4 no ka pahu pākaukau maikaʻi.
- E hoʻohana i ka uea anana 2 no ka pahu pahu pahu ʻino.
ʻo ia wale nō. I kēia manawa e loaʻa i kāu kaʻa ka mana mau.
E nānā pono kākou ma lalo nei:
Pono e ʻike i nā mea e pili ana i ka nui o ke kaula pila
Ma mua o ka lele ʻana i nā hopena, pono ʻoe e hoʻomaopopo i kekahi mau mea. ʻO ke koho ʻana i ke ana uea kūpono e pili pono ana i nā kumu ʻelua.
- Kaumaha ʻia (i kēia manawa)
- Ka lōʻihi o ke ana
Kaumaha ʻana
Hiki i ka mea hoʻomaka ke hāʻawi i 200-250 amps. No ka nui loa o ke au, pono ʻoe i kahi conductor nui loa. Inā mānoanoa loa ke kaula, e hoʻonui ia i ke kū'ē a hoʻopau i ke kahe o ke au.
Manaʻo kōkua: ʻO ke kū ʻana o kahi uea e pili ana i ka lōʻihi a me ka ʻāpana cross-sectional o kēlā uea. No laila, ʻoi aku ka ikaika o ka uea mānoanoa.
Hiki i ke kaula lahilahi ke hoʻopōkole. No laila he mea koʻikoʻi ke koho ʻana i ka nui o ke kaula.
Ka lōʻihi o ke ana
I ka piʻi ʻana o ka lōʻihi o ka uwea, piʻi maʻalahi ke kūʻē. Wahi a ke kānāwai o Ohm,
No laila, piʻi pū ka hāʻule o ka volta.
ʻAe ʻia ka hāʻule ʻana o ka uila no nā uwea pākaukau 12 V
Ke hoʻohana nei i kahi pākaukau 12V me nā uwea AWG, pono e emi ka hāʻule o ka volta ma mua o 3%. No laila, ʻo ka hāʻule ʻana o ka voltage kiʻekiʻe
E hoomanao i keia hopena; pono ʻoe i ke koho ʻana i nā uwea pākaukau.
Manaʻo kōkua: ʻO AWG, ʻike ʻia ʻo American Wire Gauge, ʻo ia ke ala maʻamau no ka hoʻoholo ʻana i ke ana uea. Ke kiʻekiʻe ka helu, liʻiliʻi ke anawaena a me ka mānoanoa. No ka laʻana, ʻoi aku ka liʻiliʻi o ke anawaena 6 AWG ma mua o 4 AWG uea. No laila, e hana ka uea 6 AWG i ke kū'ē liʻiliʻi ma mua o ka uea 4 AWG. (1)
ʻO ka uea hea ka maikaʻi no nā uwea hoʻomaka pākaukau?
ʻIke ʻoe e pili ana ka nui o ke kaula i ka amperage a me ka mamao. No laila, ke loli kēia mau mea ʻelua, hiki ke loli ka nui o ka uea. No ka laʻana, inā lawa ka uwea AWG 6 no 100 amps a me 5 kapuaʻi, ʻaʻole lawa ia no 10 kapuaʻi a me 150 amps.
Hiki iā ʻoe ke hoʻohana i 4 AWG uea no ka pahu pākaukau maikaʻi a me 2 AWG uea no ka pahu pākahi ʻino. Akā ʻo ka ʻae ʻana i kēia hopena i kēia manawa hiki ke lilo i mea huikau. No laila eia ka wehewehe kikoʻī.
ʻO nā mea a mākou i aʻo ai i kēia manawa:
- Hoʻomaka = 200-250 amps (manaʻo 200 amps)
- V = IC
- ʻAe ʻia ka hāʻule ʻana o ka uila no kahi pākaukau 12V = 0.36V
Ma muli o nā hopena kumu ʻekolu ma luna, hiki iā ʻoe ke hoʻomaka e hoʻāʻo i ka uea 4 AWG. Eia kekahi, e hoʻohana mākou i ka mamao e like me 4 kapuaʻi, 7 kapuaʻi, 10 kapuaʻi, 13 kapuaʻi, etc.
ʻO ke kūpaʻa uea 4 AWG no 1000 kapuaʻi = 0.25 ohm (kokoke)
No laila,
Ma 4 kapuai
Kaomi maanei no ka mea, Helu Ku'e Uea.
Uea pale 4 AWG = 0.001 ohm
No laila,
Ma 7 kapuai
Uea pale 4 AWG = 0.00175 ohm
No laila,
Ma 10 kapuai
Uea pale 4 AWG = 0.0025 ohm
No laila,
E like me kāu e noʻonoʻo ai, ma 10 kapuaʻi, ʻoi aku ka 4 AWG uea ma mua o ka hāʻule uila ʻae ʻia. No laila, pono ʻoe i kahi uwea lahilahi 10 kapuaʻi ka lōʻihi.
Eia ke kiʻikuhi piha no ka mamao a me ke au.
o kēia manawa (Amp) | 4ft | 7 kapuaʻi | 10 kapuaʻi | 13 kapuaʻi | 16 kapuaʻi | 19 kapuaʻi | 22 kapuaʻi |
0-20 | 12 | 12 | 12 | 12 | 10 | 10 | 10 |
20-35 | 12 | 10 | 10 | 10 | 10 | 8 | 8 |
35-50 | 10 | 10 | 10 | 8 | 8 | 8 | 6 a i ʻole 4 |
50-65 | 10 | 10 | 8 | 8 | 6 a i ʻole 4 | 6 a i ʻole 4 | 4 |
65-85 | 10 | 8 | 8 | 6 a i ʻole 4 | 4 | 4 | 4 |
85-105 | 8 | 8 | 6 a i ʻole 4 | 4 | 4 | 4 | 4 |
105-125 | 8 | 8 | 6 a i ʻole 4 | 4 | 4 | 4 | 2 |
125-150 | 8 | 6 a i ʻole 4 | 4 | 4 | 2 | 2 | 2 |
150-200 | 6 a i ʻole 4 | 4 | 4 | 2 | 2 | 1/0 | 1/0 |
200-250 | 4 | 4 | 2 | 2 | 1/0 | 1/0 | 1/0 |
250-300 | 4 | 2 | 2 | 1/0 | 1/0 | 1/0 | 2/0 |
Inā hahai ʻoe i ka pakuhi ma luna, hiki iā ʻoe ke hōʻoia i kā mākou hopena i helu ʻia. ʻO ka hapa nui o ka manawa, hiki ke 13 kapuaʻi ka lōʻihi o ke kaula hoʻomaka pākahi. I kekahi manawa hiki ke oi aku. Eia naʻe, ʻoi aku ka nui o ka 4 AWG no ka pahu maikaʻi a me 2 AWG no ka terminal maikaʻi ʻole.
Nīnau pinepineʻia
Hiki ke hoʻohana ʻia kahi uwea pākaukau liʻiliʻi?
ʻO nā uwea AWG liʻiliʻi he kiʻekiʻe ke kūpaʻa. No laila, e hoʻopilikia ʻia ke kahe o kēia manawa.
Hiki iaʻu ke hoʻohana i ka uwea pākaukau nui loa?
Ke mānoanoa loa ka uwea, pono ʻoe e hoʻolilo i ke kālā hou aʻe. ʻO ka maʻamau he pipiʻi nā uea mānoanoa. (2)
E hōʻuluʻulu
I kēlā me kēia manawa āu e koho ai i ka nui o ka uwea uwea pākaukau, e hahai i nā kuhikuhi ma luna. E kōkua maoli kēia iā ʻoe e koho i ka nui uea kūpono. Eia kekahi, ʻaʻole pono ʻoe e hilinaʻi i ka pakuhi i kēlā me kēia manawa. Ma ka hana ʻana i kekahi mau helu helu, hiki iā ʻoe ke nānā i ka hāʻule ʻana o ka voltage ʻae ʻia.
E nānā i kekahi o kā mākou ʻatikala ma lalo nei.
- Pehea e hoʻokaʻawale ai i kahi uea maikaʻi ʻole mai kahi uea maikaʻi
- Pehea e nānā ai i ke kaula uila me ka multimeter
- He aha ka nui uea no 30 amps 200 kapuai
koi
(1) kū'ē - https://www.britannica.com/technology/resistance-electronics
(2) pipiʻi nā uwea - https://www.alphr.com/blogs/2011/02/08/the-most-expensive-cable-in-the-world/
Nā loulou wikiō