Caution
If unsure you should seek expert advice rather than risk accidents.
Always disconnect from the mains electricity supply before installation to a circuit.
Check that the correct fuses are used before re-connection to the mains electricity.
If you have any questions relating to UK Electrics, please post them in the UK Electrics Forum, for queries relating to Electrics from Outside the UK, please post them in the Electrics Outside the UK Forum.