The thickness of the wire (cross-sectional area of the wire) corresponds to the load capacity, that is, the allowable normal working current. Purely theoretically, the thicker the wire diameter, the smaller the line loss, and the smaller the wire diameter, the greater the line loss. This is not wrong. But you can't blindly increase the diameter in order to save electricity once every 10 years. This is neither economical nor necessary. The selection should be based on the allowable nominal current of the wire to match the maximum working current of the line. As for someone who mentioned that the working current of the short-circuit fault increases sharply, this can not be solved by thickening the wire diameter, but by selecting the appropriate circuit breaker in the distribution box to ensure the safety of electricity use.
Déanfaidh sreanga tanaí níos mó cumhachta a ithe. Tá dhá chúis ann. Gcéad dul síos, nuair a bhíonn na sreanga tanaí, tá an fhriotaíocht mór, agus tá an teas a ghintear faoin sruth céanna mór, rud a ídíonn níos mó cumhachta. Sa dara háit, nuair a bhíonn an fhriotaíocht mór, tá an titim voltas mór, agus tá voltas an ualaigh deiridh íseal. I gcás go leor ualaí, mar shampla mótair, beidh an voltas íseal mar thoradh ar éifeachtacht íseal, méadóidh an sruth ina ionad sin, agus méadóidh an tomhaltas cumhachta go mór.
Dá lú an sreang, is mó an fhriotaíocht, a ídeoidh níos mó cumhachta go réasúnta, ach tá an chuid ilchaillteanais beagnach neamhbhríoch!
It's not that thicker wires save power!
Braitheann sé ar an staid shonrach. Nuair a bhíonn an ciorcad ceangailte, faightear amach go bhfuil an sreang téite, agus déantar an fuinneamh leictreach a chaitheamh i gcuid den sreang. Ar ndóigh, gearrtar an sreang go mín. Tabhair faoi deara, sa chás seo, gur chóir na sreanga níos tiús a athsholáthar in am chun timpistí a chosc!
