u/AcidHouseMouse

It’s a new socket installed by a certified electrician, who I don’t want back (another story), in the barn, he installed a separate consumer unit to the house which has not tripped . It’s an oldish extension lead with just one usb to mains plug plugged in powering rechargeable fairy lights.

Any advice on why this has happened and why it has not tripped the electrics or blown the extension lead fuse before getting to this stage. The extension lead still works remarkably. Any advice on avoiding future fires would be greatly appreciated. Obviously I shall bin the extension lead.