Masterplug 13A Weatherproof Inline Trailing Socket - 1 Gang - IP54

It is IP54 rated, meaning it is splash-proof and dust-resistant, but it is not waterproof and should not be submerged or left out in heavy, direct rain.

No, this is designed for temporary outdoor use. It should be brought indoors when not in use to extend its lifespan.

You should use a 3-core cable appropriate for 13A loads, typically 1.25mm or 1.5mm flexible rubber cable.

No, this is a trailing socket head intended for you to wire onto your own length of cable.

Yes, provided the total load does not exceed 13A and the connections are made securely by a competent person.

Ensure the safety shutters are aligned correctly; apply firm, even pressure to the plug to overcome the shutter resistance.

Verify that the plug being used is a standard 13A UK plug; worn plug pins can cause a loose fit and should be replaced.

Check that the wires are properly seated in the terminals inside the socket and that the power source at the other end of the lead is active.