Wiring advice for plug in lights

[jimieee]

Hello.

I want to make a light fitting with three bulbs that plugs into the mains. I've attached a circuit diagram of what I had in mind.
I put it together, plugged in the last bulb on the circuit only (i.e. the one on the far right of the diagram), but when I turned on the power it tripped the main switch on my consumer unit.

What did I do wrong?
Is there a better way to achieve the same result?

[plumbbob]

There is nothing wrong with your diagram. Either you have made a mistake when actually connecting the wires, one of the light fittings is faulty or a cable is damaged such as being nailed through.