It is generally not recommended to plug a washing machine or dishwasher into an extension lead (also known as an extension cord or power strip) for several reasons:
Power Requirements: Washing machines and dishwashers are high-power appliances that draw a significant amount of electricity. They require a dedicated circuit with sufficient amperage to handle their power demands. Plugging them into an extension lead along with other devices may overload the extension cord and the circuit it's connected to, leading to potential electrical hazards like overheating or electrical fires.
Distance and Stability: Extension leads are designed for temporary use and are typically not meant to be a permanent solution for connecting large appliances. They may not provide a secure and stable connection, which can lead to intermittent power loss or electrical arcing.
Length Limitations: Extension leads have a maximum recommended length, beyond which voltage drops and electrical resistance can occur. Using a long extension lead for a high-power appliance may result in inadequate voltage reaching the appliance, affecting its performance and potentially causing damage.
Safety Concerns: Washing machines and dishwashers involve water and moisture in their operations, which can be a safety concern when using extension leads. If not properly managed, water exposure near electrical connections can lead to short circuits and electric shocks.
For safety and performance reasons, it's best to have dedicated electrical outlets installed specifically for your washing machine and dishwasher. If your current setup requires the use of an extension lead, it's essential to ensure that the extension lead is rated for the appliance's power requirements and that it is used only as a temporary solution until a proper outlet can be installed.
If you need additional outlets or electrical modifications for your appliances, it's best to consult a qualified electrician to ensure that the work is done safely and in compliance with local electrical codes.