Enter the length (m), the resistance (ohms), and the current (amps) into the Relay Burden Calculator. The calculator will evaluate the Relay Burden.

## Relay Burden Formula

The following formula is used to calculate the Relay Burden.

**RB = I^2*2*D*R**

Variables:

- Rb is the Relay Burden (volts)
- D is the length (m)
- R is the resistance (ohms)
- I is the current (amps)

## How to Calculate Relay Burden?

The following steps outline how to calculate the Relay Burden.

- First, determine the length (m).
- Next, determine the resistance (ohms).
- Next, determine the current (amps).
- Next, gather the formula from above = RB = L^2*2*D*R.
- Finally, calculate the Relay Burden.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

length (m) = 50

resistance (ohms) = 20

current (amps) = 3

RB = I^2*2*D*R =** ** ?