Why did I get 50v when I turned the fuse-board off?

Even pulled the fuse out the kmf but still got 50v between earth and neutral. When i energised the fuseboard back up the voltage went. Had a high ZE. And a high PFC. 
however the RCD wouldn’t operate. I have noticed 15/20v’s at multiple different properties in the last 6 months but today. I felt the volts when changing a socket. Do we need to start disconnecting all cables before we change a socket or light etc. does there need to have more earth spikes fitted on property’s. No engineer should get a shock it’s they turn off the mains. 

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  • I'm not sure how you can have a high ze and a high pfc?

    Perhaps diverted neutral currents or If tnc--s maybe a fault in pen conductor.

    I think more information is required like type of earthing system,method of isolation ie: single or double pole?

    Maybe reversed polarity, needs proper inspection I think.

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  • I'm not sure how you can have a high ze and a high pfc?

    Perhaps diverted neutral currents or If tnc--s maybe a fault in pen conductor.

    I think more information is required like type of earthing system,method of isolation ie: single or double pole?

    Maybe reversed polarity, needs proper inspection I think.

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