Practical limits
The calculator runs in your browser.
You do not need an account to use the load check. The numbers you type into the calculator are used in your browser to update the result on the page.
Photos stay with you
If you use a photo of a consumer unit or equipment label, read the visible rating yourself. The calculator does not upload or inspect photos.
Keep private site details out
Do not enter personal, tenant or sensitive site information into any public tool unless you are happy to handle it yourself.