This application helps you;

Calculating cable type and size, finding breaker and drawing single line diagram for main distribution or MCC panels power outputs on 3P 50Hz electrical circuits.

Because you can change parameters easily and see the effect of that changes immediately, you might be able to make better decision selecting right cables or breakers.

Using Kablo, you can make one quick calculation for one load or you can make calculation for several projects with up to 50 loads then you can send results as single line diagrams which can be opened by well known CAD softwares. In case you use project option, the parameters you input is kept at your device.

To find cable size and type you need to know and input following datas;
Cos φ of load.
Load power in kW.
Breaker nominal breaking current. (In)

(Application finds the min nominal breaker current (In) but you may input higher current because breaker could be already installed or for special kind of load it could have been chosen with different In. Unless you input breaking current again in next calculation App finds In itself so inputing breaker current (In) as last parameter, may be a good idea.)


Operational voltage.
Maximum allowed voltage drop for your project.
Cable lenght.
Ambient temperature.
Number of same type cables on a perforated tray or cable ladder.
Number of trays or ladders.

For projects you can input project name, project code and designer name if you like.


Application finds multicore cables up to 300mm² .

Found cable should be considered as minumum cable size could be used.

Also, never forget that, min and max short circuit currents are not taken into account.

So, please think that application findings just for quick reference, not as a real engineering tool.