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Sounds like you have a dead short.
Have you worked on any other switches or light fittings ?
As both light fittings worked on and off when you first wired it as we suggested,it would seem the problem is not at the switch. The switch you pictured is plastic ,you haven't changed it for a metal one have you ?
Does MCB trip if both switches are in
"OFF" position ,and the 3 wires connected to switch ?
Have you worked on any other switches or light fittings ?
As both light fittings worked on and off when you first wired it as we suggested,it would seem the problem is not at the switch. The switch you pictured is plastic ,you haven't changed it for a metal one have you ?
Does MCB trip if both switches are in
"OFF" position ,and the 3 wires connected to switch ?
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