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SPD Location In this setup.

Former Community Member
Former Community Member
Good Evening.


Not posted on this new forum yet, had to re-register as it didn't seem to bring my account from the old forum across.

https://app.photobucket.com/u/A13XAV/p/e3c5a6b5-a384-4bc5-9a82-15ed88fd6a56


I have a requirement to fit an SPD on this installation. Where would you think it is best to situate the SPD? I know it should be no more than 0.5m but in this setup, would it be best half way up straight off the henley blocks? I plan to fit an enclosure with a SPD and MCB to protect it.


Unsure at the moment if that DNO incommer is 2 phases off a 3 phase transfomer or split phase at 180deg / 480V, we have not started work on it or tested anything yet. Just at the quoting stage.


Many Thanks.




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    Personally I would reroute the supply (inc PE) so it goes from the output of isolator, into the SPD enclosure,  then out again and off to the Henley blocks. Bear in mind that shorter is always better; if you can get below 0.5m, then you should.
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  • 0
    Personally I would reroute the supply (inc PE) so it goes from the output of isolator, into the SPD enclosure,  then out again and off to the Henley blocks. Bear in mind that shorter is always better; if you can get below 0.5m, then you should.
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