Voltage Drop Calculator
Kajaba iku, kamungkinan karusakan kawat listrik bisa disebabake ku panjang, arus, lan ukuran konduktor.
Hasilne bakal dioptimalake nalika sampeyan ngetik.
Ngenai kalkulator iki
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.
Takon-takon kang kerep diajukake
Carane diitung voltase mudhun?
Dina kasus ieu, 2 = 2 + 1 = 3. (2) = 2 + 1 = 3. (3) = 2 + 1 = 3. (3) = 2 + 1 = 3. (3) = 2 + 1 = 3.
Apa sing diarani kecanduan?
A umum aturan leungeun nyaéta pikeun tetep total turun di handapeun 3% pikeun sirkuit cabang jeung 5% sacara umum. konduktor leuwih gede (kawasan leuwih gede) ngurangan turun.
Aluminium utawa aluminium (IPA: ) iku logam.
Aluminium boga resistivitas 60% leuwih luhur ti tambaga, jadi aluminium run tina ukuran anu sami turun proporsional leuwih voltase.
Mengapa rumus iki nggunakake panjang kaping loro?
Akar-akarna diwangun ku dua bagian, nyaéta bagian anu ngandung akar-akar, nyaéta bagian anu ngandung akar-akar anu diwangun ku dua bagian, nyaéta bagian anu ngandung akar-akar anu diwangun ku dua bagian, nyaéta bagian anu ngandung akar-akar anu diwangun ku dua bagian.
Carane aku bisa nyuda voltase sing akeh banget?
Gunakeun konduktor anu leuwih gedé (ngadugikeun bagian cross-section kira-kira ngaleuwihan paruh kaleungitan), ngurangan laju, ngabagi beban ngaliwatan kabel paralel, atawa naekeun voltase suplai. Tambaga anu leuwih gede nyaéta panyegah anu biasa sabab kaleungitan proporsional ka area.
Kapan listrik di kabel hilang?
The wasted power is the drop times the current, Ploss = Vdrop × I. A 3.5 V drop at 20 A wastes 70 W as heat in the wire — energy you pay for but never use, which is why long high-current runs justify thicker, lower-loss cable.
Bisa aku nggunakake AWG gauges tinimbang area mm²?
Ya. Pick a gauge dina daftar AWG canggih sarta éta ngaganti widang wewengkon kalawan cross-section gauge éta dina mm² (misalna 10 AWG ≈ 5.26 mm²), jadi anjeun bisa damel dina sistem gauge installers Amérika Kalér ngagunakeun.
API — gunakake kalkulator iki saka kode
Ngadongékeun kalkulator ieu minangka titik akhir JSON bébas — teu peryogi kunci. Kirim nilai medan di handapeun minangka parameter pitakonan atawa JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Waca dokumen lengkap API →
Tampilan
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);Hasilna nyaéta perkiraan pikeun pituduh umum, henteu saran finansial, médis atanapi pajak.