MCB CALCULATOR | BREAKER SIZE CALCULATOR - LCETED

Our MCB size calculator allows you to estimate the total load (watts) and breaker size (MCB) that you need to protect your electrical appliances, which will, helps to withstand the load abnormality in the current flow and automatically switches off the electrical circuit.

Manual calculation: Wire Sizing and MCB Selection for Residential Building

 

How to use this MCB calculator?

 

Step 1: Select the Phase You need. 1-phase or 3-phase

 

Step 2: Select the Voltage of your country.

 

Step 3: Enter Demand factor value of your appliances

Non- continues load = 0.6 PF

Continues load = 1.25 PF

 

Step 4: Enter the Nos of the appliances

 

Step 5:  Enter the wattage of the appliances

Read: Load Ratings of Usual Household Appliances | Amps and Watts Ratings

 

You can also use blank rows for the other type of appliances you need. 

MCB CALCULATOR

 

 

 

 

 

 

Note: This calculation tool was developed with great care. However, we cannot be held responsible for its liability.