As an electrician who had to examine a plug which had been put on a secondhand washing machine by a sales assistant, and it killed the lady who purchased it, I was very pleased when the EU directive came in stating that all new appliances must have a molded plug attached by the manufacturers, and doubly pleased when the directive was enforced requiring secondhand electrical goods to be tested and certificated as safe before re-sale. It was not a pleasant experience to stand in a coroners court, explaining to the woman's three small children how such a simple task as fixing a plug to a cable could be so dangerous if not done absolutely correctly.
My advice. If you're not absolutely certain of what you are doing, get a proffesional. Remember: Water makes a mess, Gas you can smell, but electricity can't be seen, heard, or smelt, yet discovering it's on the loose can, in many cases, KILL.
Don't take risks, and personally speaking, I think giving advice over the phone or internet is irresponsible.
Keith3006
Dont beleive it Shambolic.
Machinery creates vibration, vibration can loosen connections.
I wont go into what can happen, but try a Screwfix forum if you want answers.
Dont mess with Electrics Please