Start the check

Check the load before you plug in temporary kit.

Use this before heaters, dehumidifiers, fans or portable AC units are used in a shop, workshop, office, classroom, storage room or plant area.

This is not an electrical inspection

The check cannot see hidden wiring, damaged sockets, RCD behaviour or local site rules. Treat amber and red results seriously and ask a competent electrician where needed.

Temporary equipment load check

Enter the socket or circuit rating and the kit that might run at the same time. Use this as a load check only — not as an electrical inspection.

Supply voltage Circuit or socket rating Warning point What are you trying to run?

Use the watts or amps printed on the equipment label. For portable AC, use input power — not BTU cooling output.

Daisy-chained extension leads or multi-way adaptors Cable reel partly coiled while equipment runs Lead/adaptor rating unknown Cable crosses a walkway, doorway or wet area

Photo note: if you have a photo of the consumer unit or equipment label, use it to read the visible circuit rating or watts/amps. Nothing is uploaded here; if you are unsure, send the photo to a competent person.

Need drying equipment?

When the calculation says the load is realistic, compare dehumidifiers by application and keep the electrical plan alongside your drying plan.

Need air movement?

For stale or damp spaces, compare ventilation products after the load check has enough spare capacity.

Need cooling?

For overheating rooms, check the input load before comparing portable air conditioners.