When the sizes of the fuses protecting the existing circuit are reduced, the chance of the circuit tripping when overloaded is increased. We call this nuisance tripping.

While nuisance tripping is not usually a problem for lighting or power circuits in areas of the home such as lounge rooms and bedrooms, nuisance tripping on derated kitchen circuits is quite common. Kitchen appliances such as kettles and toasters draw large amounts of power for short periods of time and can easily trip a 13 amp breaker (the most common sized fuse that older homes need to be reduced to).

To avoid nuisance tripping, we simply run a new cable with a higher temperature rating to the kitchen powerpoints that allows us to install a larger fuse on that circuit. That way you can still make your toast and coffee at the same time without having to run to the switchboard.