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Please could you explain why the fan "downrates" 2400W to just 75W? What is happening here?

What's the most likely result if I exceed the load on the PIR? Is it dangerous?

Thanks, you mean for example a fan with a delay that comes on 2 mins after the switch is triggered?

Thanks @EFLImpudence. So how do I read other PIR specs where they just say "Switching capacities 110V-130V max 500W, 220-240V max 1200W.". Would this manage to switch the lights and the fan? Reference...

I am installing a PIR to turn on a fan and 5 recessed lights. It says the maximum switchable load is as follows: Are these limits meant to be added together, or individual restrictions for the circuit? How much "slack" are in these figures usually? My fan is 77W, and each lamp is 6.5W...

@EFLImpudence thanks, what's best practice for an unused earth? cut it back, tape it up, or just put a long sheath over it?

I have a PIR that has the following wiring diagram: Am I correct that this needs to be wired with a 3 core no earth wire? What is "A" in this diagram? N - Neutral L - Live A - Switch live??

I've just bought a new flat, renovated in the mid-1980s. I've started to change out a few of the old ceiling pendants for new ones, and have discovered a lot of "patchwork" wiring. E.g. extending a cable length using exposed t-piece screw connectors, like this: The connections in this photo...