Earth Bondhon
Creators
Rojony Khatun Author
Rojony Khatun
CalculatorToolsProjectExpert
Reviewers
Małgorzata Koperska, MD Steven Wooding
Last updated: August 16, 2025

Leakage Current Calculator: Formula & Example Table

🇺🇸
English
Default
🇪🇸
Español
Spanish
🇫🇷
Français
French
🇩🇪
Deutsch
German

leakage current calculator

Calculate leakage current using I L =V/R, where V is the voltage across the insulation and R is the insulation resistance.

insulation resistance calculator

Leakage current is computed by dividing the difference between insulation voltage and insulation resistance in ohms E

Formula & Table Summary:

\( I_L = \frac{V}{R} \)

Where: IL = leakage current (A), V = voltage (V), R = resistance (Ω)

insulation leakage current

The Leakage Current Calculator identifies current Leaking out the intended positions The Leakage Current Calculator determines the electric current that escapes unintentional pathways The Leakage Current Calculator detects the electric current that flows away to unintended routes Returning to the formula introduced earlier, leakage current, IL= V / R, where V is voltage and R is the insulation resistance.A Leakage Current Calculator calculates the amount of current going through an unintended pathway, e.g. poor insulation or water in an electrical installation. Leakage current is an important safety related parameter, with overly-high levels of leakage able to lead to electric shock, malfunction of equipment or actuation of residual current devices (RCDs). Leakage current can be most simply computed using the formula known as Ohm s law: the voltage across the insulating layer divided by the insulation resistance.

leakage current equation

V (V)R (Ω)CalculationIL (mA)
2301 MΩ230 / 1,000,0000.23
120500 kΩ120 / 500,0000.24
4002 MΩ400 / 2,000,0000.20
48100 kΩ48 / 100,0000.48
60200 kΩ60 / 200,0000.30

Frequently Asked Questions - leakage current calculator:

How do you calculate leakage current?

Divide voltage across insulation by insulation resistance.

What is leakage current?

Unwanted current flowing through insulation, moisture, or unintended paths.

What causes leakage current?

Damaged insulation, moisture, contamination, or aging components.

What is a safe leakage current?

Generally below 0.5 mA for handheld devices, per IEC/UL standards.

How is leakage current measured?

Using an insulation tester or leakage clamp meter.

What standard defines leakage current limits?

IEC 60990 and UL 61010 provide guidelines.

Can leakage current trip breakers?

Yes, if it exceeds the residual current device threshold.

What is earth leakage current?

Leakage current flowing to ground through insulation or chassis.

Does capacitance affect leakage current?

Yes, capacitive coupling can create AC leakage.

How to reduce leakage current?

Improve insulation, keep equipment dry, and use RCD/GFCI protection.

Rojony Khatun

Rojony Khatun

CalculatorToolsProject

Rojony Khatun is the creator of a free online tools website designed to simplify everyday and engineering-related calculations for students, professionals, and hobbyists. The platform offers a wide variety of basic and advanced calculators across key categories, including Electrical Calculators, Electronic Calculators, and Time & Date Calculators, helping users solve problems quickly and accurately.