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Cable tray of Generator High voltage 11KV cable is not connected to Earth..

Rohit Sharma

WE have some generators which are producing 11KV voltage. 3 Phase cables coming from Generator are passing through the cable tray, so this cable tray body is not connected to earth. Pl see the attached picture for better understanding. 

Is there any risk to keep this tray floating or need to connect to earth. 

Kindly share your valuable comments.  

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  • 0

    What type of cables are they? e.g. are they armoured?

       - Andy.

  • 0 in reply to AJJewsbury

    This is armoured cables.

  • 0 in reply to Rohit Sharma

    are the armours of the cables earthed, either at one end or both ?

    How are the genset frames earthed?

    Regardless,  it seems a bit odd if not at least tied to the genset earthing arrangement. As you say how would you know if it went floating off.- you do not need a conventional fault to create a nasty sting in the sort of situation,  just stray coupling.

    It would be sensible to enquire why - In your shoes I'd llike and expect to see the frames of the genset, and both cable trays ,and any other "electric plumbing" that might be touched at the same time to be incapable of being at different voltages.

    Mike.

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  • 0 in reply to Rohit Sharma

    are the armours of the cables earthed, either at one end or both ?

    How are the genset frames earthed?

    Regardless,  it seems a bit odd if not at least tied to the genset earthing arrangement. As you say how would you know if it went floating off.- you do not need a conventional fault to create a nasty sting in the sort of situation,  just stray coupling.

    It would be sensible to enquire why - In your shoes I'd llike and expect to see the frames of the genset, and both cable trays ,and any other "electric plumbing" that might be touched at the same time to be incapable of being at different voltages.

    Mike.

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