"Chris Crinkle" wrote in message
...

I have a 7 day timer, with a max load of 13A at 240V.
However reading the instructions its states there is an inductance current
of 3A. What does this mean ?

Inductive loads (motors, coils etc.) have stored energy in their coils which
means the current you have to break can be much higher than is on the rating
plate.

So any switch rated for a non-inductive load (lights, heater) will be down
rated for inductive loads.
Some are not suitable at all for inductive loads.