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Earth pin missing

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I noted several of these connecting audio visual equipment below a control desk in a large church complex. You can see that the earth pin has been deliberately removed. Must have been done before the date on the PAT stickers! Anyway, I know some of these audio guys have strange perceptions and I am wondering was the earth pin removed to avoid interference.
Parents
  • Looks to me as though these where plastic earth pins.

    Possibly accidently broken of.

    Possibly deliberately removed in a misguided effort to remove mains hum.

    Whilst a missing PLASTIC earth pin is obviously not directly electrically dangerous, I would still be inclined to condemn such items in  a work place, they wont fit the common types of 13 amp socket outlet that relies on the earth pin to open the shutters. Increases the risk of dangerous bodges or improvisations to fit the damaged plug in to a standard outlet.
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  • Looks to me as though these where plastic earth pins.

    Possibly accidently broken of.

    Possibly deliberately removed in a misguided effort to remove mains hum.

    Whilst a missing PLASTIC earth pin is obviously not directly electrically dangerous, I would still be inclined to condemn such items in  a work place, they wont fit the common types of 13 amp socket outlet that relies on the earth pin to open the shutters. Increases the risk of dangerous bodges or improvisations to fit the damaged plug in to a standard outlet.
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