Built around understanding
London Electrical Distributors brings together everyday electrical calculators, practical reference guides and a directory of local wholesalers.
We want you to understand the number you see: its units, the equation behind it and the assumptions it depends on. Our tools do not recommend installation cable sizes or certify that electrical work is safe.
Follow the working
Each calculator shows the formula, units and assumptions used to produce your result. Explore the calculation methodology for more detail.
The local directory
Find supplier contact details and locations across London. Confirm opening hours and product availability directly before travelling or placing an order.