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there's some so and so based southern area who 'repairs' dysons by covering the neutral cable in sticky silver foil, just mm from the live switch supply, this would cause a nasty fault which if the customer doesn't have a decent modern RCD fuseboard up front could kill!
Albeit on any repairers head if you aren't PAT testing a machine before reselling
a case of an engineer who failed a Dyson Vacuum cleaner because he couldn't get an earth on it, and chopped the plug off. Now we know that reason he couldn't get an earth was because it was class 2 but he didn't see the symbol. The vacuum was 2 weeks old, the customer took it back to Curry's who sent it back to Dyson, declared it to be perfectly safe - apart from the fact that some muppet had chopped the plug off. They charged £70 for a new cable assembly (plug is colour coded to the vacuum and moulded onto the cable!)
I always thought that was something Dyson once did? We see so many of those, I doubted it they could come from a single source? Happy to be corrected if you know better.
"In regards to PAT testing: yes it doesn't have the earth so no earth leakage test, however one of the tests checks the insulation resistance of the L/N sheathing, which checks for a fault that cannot be seen by the eye alone (internally twisted or worn conductors) as I say it's completely down to the engineer in question but I'd not risk selling one without it."