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EICR on a marina, say I have a distribution unit with 3 BS88 fuses each one feeds another DU A,B,C for instance say for DU B I have circuit details then schedule of test results for the main DU that feeds the others but on that one it says Max Zs reading for DU B theres no dead testing so, then another circuit details and shedule of test results for DU B it’s self with sub circuits which I will put Zs as my highest from testing all sockets will my max Zs just be my Maximum Zsb from testing DU B itself? For my main DU reading for DU B
Hope it makes sense
 
EICR on a marina, say I have a distribution unit with 3 BS88 fuses, each one feeds another DU A,B,C, for instance.
Say for DU B I have circuit details, and a schedule of test results for the main DU that feeds the others, but on that one it says, max Zs reading for DU B there's no dead testing, so, then another circuit details and shedule of test results for DU B it’s self with sub circuits which I will put Zs as my highest from testing all sockets will my max Zs just be my Maximum Zsb from testing DU B itself? For my main DU reading for DU B
Hope it makes sense
 
Bradley from your past posts you are undertaking a job you should not be.
I agree with Westy Bradley, do you have any electrical experiencor qualifications, as your profile lists none.
 
Hopefully he hasn’t or my funny rating will go down like a lead balloon :(
I'm sure he hasn't drowned Ian, may be a bit unsure of how to react to some of the replies.
 
He is getting his hand - held instructions on the screwfux forum (God help him). Seems he's not aware that for a downstream DB (Its a marina) the Ze can be n/a.
 
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Confusing hahahaha I’m only an apprentice so still trying to learn, there’s a Main DB which feeds another DB say DB1 which has a main switch that feeds a another DB say DB2, there’s a shedule of circuit details and results for DB1 to DB2 which I’ve measured the Zsb and ka at each one but confused will my Maximum earth loop impedance be the same as Zsb as it’s only the sub cable feeding the DB2 as no dead testing involved
 
Confusing hahahaha I’m only an apprentice so still trying to learn, there’s a Main DB which feeds another DB say DB1 which has a main switch that feeds a another DB say DB2, there’s a shedule of circuit details and results for DB1 to DB2 which I’ve measured the Zsb and ka at each one but confused will my Maximum earth loop impedance be the same as Zsb as it’s only the sub cable feeding the DB2 as no dead testing involved
Sorry but I'm still struggling to understand the question. There will be a Ze at the intake, and a Zdb at each sub board. The maximum permitted Zs at each DB will depend on the OCPD protecting the distribution circuit.
 

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