Multiple kitchen appliance failures

[Lucien Nunes]

Failure of a socket, switch or connection powering a heating or cooking appliance is likely to happen during cooking once the load has been on for long enough for it to get hot. It's normally an avalanche effect, a bad connection or contact gets hot, its spring or clamping force weakens or the plastic parts give a little, further loosening the contact, increasing the resistance et, then a little bit of arcing creates an airgap and it never makes contact again.