Calculators • The Electricans ToolKit

Ohm’s law + Power

Enter any two values to solve the rest.

Voltage (V) Current (A) Resistance (Ω) Power (W)

Solved

Rounded to 4 dp

V—

I—

R—

P—

AC Power (cosφ)

System Voltage (V) Current (A) Power factor cosφ

Results

P (W), S (VA), Q (var)

P—

S—

Q—

φ—

Formulas: single‑phase \(P=VI\cos\varphi\). three‑phase \(P=\sqrt{3}V_{LL}I\cos\varphi\).

Voltage drop (TLC-style)

Matches the input style of TLC’s voltage drop calculator. Results here are an estimate—always verify against the regs / manufacturer data.

Cable type Application Circuit type Ambient temperature Number of circuits Circuit layout Power (kW) Voltage (V) Length (m)

Results

Estimate

Required cable size—

Voltage drop—

Percentage drop—

Current load—

Max cable load—

Allowed drop used: —