Voltage hoos u Calculator
Qiimayn voltage la waayey along a wire socday muddo, hadda iyo cabbirka conductor.
Natiijooyinka cusbooneysiinta sida aad ku qorto.
Ku saabsan Kalkaaliyahan
Every conductor has some resistance, so a little voltage is always lost pushing current along a cable — that loss is the voltage drop. For a single-phase run the drop is Vdrop = 2 × ρ × L × I / A, where the factor 2 accounts for the current travelling out to the load and back along the return conductor; a three-phase run uses √3 instead of 2. Here ρ is the resistivity of the metal (copper ≈ 0.0175 Ω·mm²/m, aluminium ≈ 0.0282 Ω·mm²/m), L is the one-way length in metres, I the load current in amps and A the conductor cross-section in mm². This calculator also reports the resulting percentage drop, the voltage actually delivered at the load and the power wasted as heat in the cable (Ploss = Vdrop × I).
As a worked example, take 20 A flowing 50 m one-way through a 10 mm² copper cable on a 230 V single-phase supply: Vdrop = 2 × 0.0175 × 50 × 20 / 10 = 3.5 V, about 1.5%, so the load sees roughly 226.5 V and the cable wastes 3.5 × 20 = 70 W. Switch the conductor to aluminium and the same run drops about 5.6 V, because aluminium’s resistivity is around 60% higher. You can either type a custom cross-section or pick a standard AWG gauge from the advanced list, which overrides the area field with the gauge’s real mm² value.
Voltage drop matters because motors, lights and electronics misbehave when they are starved of voltage — dim lamps, sluggish motors and nuisance tripping all trace back to oversized drops on long runs. Electricians size cables so total drop stays within about 3% for branch circuits and 5% end-to-end; the result here flags whether your run meets the limit you set, and the fix for a failing run is a larger conductor, a shorter route or, occasionally, a higher supply voltage.
Su'aalaha badanaa la isweydiiyo
Sidee ayaa hoos u voltage la xisaabiyey?
Si loo sameeyo hal-qaad, Vdrop = 2 × ρ × L × I / A. Factarka 2 xisaabaadka ee hadda socda iyo dib; saddex-qaadista isticmaalaa √3 in ka badan 2.
Maxay tahay hoos u dhaca voltage waa la aqbali karaa?
A sharci caadi ah ee afka waa in la ilaaliyo hoos u dhac guud 3% ee silsilado xafiiska iyo 5% guud ahaan. conductors weyn (degaanka weyn) yareeyaan hoos u.
Copper ama aluminium - ma muhiim baa?
Haa. Aluminium wuxuu leeyahay ku saabsan 60% resistivity sare ka copper, sidaas darteed aluminium oo ku socda oo ah cabbirka isku mid ah hoos u dhac ku filan oo ka badan voltaj.
Maxaa ka dhigaysa foomka isticmaalaan laba jeer dhererka?
Hadda waa in ay ka soo qulquli in la qaado iyo dib, sidaas daraaddeed wareegga hal-geesood ah oo arkay hoos u dhaca labada conductors - sidaas darteed, faa'iidada 2 × dhererka. saddex-geesoodka wareegyada isticmaalaan √3 (qiyaastii 1.732) in kastoo, muujinaya geometries of awoodda saddex-geesoodka ah ee isku dheelitiran.
Sideen u yareeyaa hoos u dhaca voltiga oo xad dhaaf ah?
isticmaalo conductor weyn (la isku darsado qaybta cross-qiyaastii kala badh hoos), yareeyaan socdaalka, kala qaybsan lacagta ka dhex cables isku xigta, ama kor u qaado voltajka siinta. copper weyn waa xalka caadiga ah sababtoo ah hoos u dhaca waa si ka duwan u qaybsan in ay dhul.
Sidee awoodda badan ayaa la waayo cable?
Xoogga la xaday waa tirada jeer ee hoos u dhaca hadda, Ploss = Vdrop × I. A 3.5 V hoos u dhaca 20 A waxyeello 70 W sida kulaylka ee wiilka - tamarta aad bixiso laakiin marnaba isticmaali, taas oo ah sababta dheer sare-haatan socda xaq u leh thicker, cable hoos u khasaaraha hoose.
Ma isticmaali karaa AWG miisaanka ka dibna mm² ee gobolka?
Haa. Dooro miisaanka in liiska AWG horumarsan iyo waxa ay ka sarraysiisaa goobta dhulka la qaybta cross ee miisaanka ee mm² (tusaale ahaan 10 AWG ≈ 5.26 mm²), si aad u shaqeyso ee nidaamka miisaanka North American aasaasayaasha isticmaalaan.
API — isticmaal xisaabinta ka code
Wici xisaabinta sida free JSON endpoint - key ma loo baahan yahay. Dib u soo dir qiimaha goobta hoos ku qoran sida parameters su'aal ama JSON. Wax kasta oo aad ka maqan tahay isticmaalaa default la mid ah ee boggani waa hore loo buuxiyey la; parameter aan la aqoon waa 400, marnaba ma aha zero maqan. Akhri dhammaan API xuquuqda →
Xarafka
GET https://calculator.free/api/v1/voltage-drop/curl
curl "https://calculator.free/api/v1/voltage-drop/?material=copper&length=50¤t=20&area=10&source=230"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/voltage-drop/?" + new URLSearchParams({
"material": "copper",
"length": "50",
"current": "20",
"area": "10",
"source": "230"
}));
const data = await r.json();
console.log(data.results);Natiijooyinka waa tirakoobka loogu talagalay tilmaamaha guud oo keliya, maaha dhaqaale, caafimaad ama talo bixin canshuur.