Cooker circuit tripping out with no appliances on it. Not immediately tripping.

[brongochungus]

Even if the cooker and the plug is turned off it still trips after about an hour. It doesn't immediately trip out but it usually always turns back off after an hour or two, it doesn't immediately trip out. Do you think I need a new plug? Can a device plugged into another circuit trip a different circuit? This has started happening after plugging in a new boiler, but the boiler doesn't turn off its on a different circuit, only the cooker trips. Could it be the plug to the cooker or what? Thank you.

 

[brianmoooore]

You haven't provided nearly enough details for us to give a definitive explanation of what's happening, but yes, it is very possible for a fault on one circuit to trip a completely different circuit on most fuse boxes. These are neutral to earth faults.