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Low ze High PFC help

goldenboy1818

Hi all I wondered if someone could please help

Doing some new builds with a substation about 30 yards from these two houses I'm currently on.

Initial testing I had a normal PFC, I don't know why but now the readings have changed (they have connected in a lot more houses on the site since ).

My ze is now around 0.03 and PFC around 8ka which is above my rcbo ka value of 6ka.

Not really come across this before, am I still ok where it has a 16ka 1361 protecting the house or is there something else I need to do ?

Thank you

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    If the RCBOs are in a UK style consumer unit (i.e. meeting annexe ZB of BS 61439-3 in standards speak) supplied by a protective device specified by the manufacturer (typically a BS 88-3 100A or less (or BS 1361 equivalent)) the assembly will be rated at 16kA and so you should be fine. (See reg 536.4.201).

       - Andy.

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  • 0

    If the RCBOs are in a UK style consumer unit (i.e. meeting annexe ZB of BS 61439-3 in standards speak) supplied by a protective device specified by the manufacturer (typically a BS 88-3 100A or less (or BS 1361 equivalent)) the assembly will be rated at 16kA and so you should be fine. (See reg 536.4.201).

       - Andy.

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