Cable size, installation method, circuit length, protective device and existing demand all affect whether the supply can carry the appliance safely.
Cable condition and size
The visible end is only part of the circuit. Damage, undersizing or unsuitable routing can affect safe loading.
Breaker or RCBO selection
The device must protect the cable and meet the disconnection requirements of the installation.
Existing circuit demand
Other connected loads and the consumer unit’s capacity may affect what can be added safely.
Where the circuit trips, overheats or tests poorly, it may need
fault investigation
before the appliance can be connected.