Independent home electrical planning tool

Home Electrical Load & Expansion Headroom Planner

Add current loads and planned appliances to compare an explicit simultaneous-use scenario with your sanctioned or connected load.

Step 1

Build your load scenario

Enter actual nameplate watts and explicit simultaneous quantity. No diversity factor is assumed.

kW

Existing loads

Planned additions

Runs in your browser. No entered data is stored or sent.

Step 2

Load and headroom result

Enter actual loads and simultaneous quantities to see headroom.

How the calculation works

Each row = nameplate watts × simultaneous quantity. Projected load adds planned rows. Headroom = entered limit − calculated scenario load.

Safety boundary

Arithmetic planning only. It does not approve wiring, breakers, protection, phase allocation, supply upgrades or compliance.