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EiCR sampling size

Former Community Member
Former Community Member
Hi all I'm just trying to get my head round this, I hold a copy of guidance note 3 already. 


Let's say we have a domestic CU with 8 circuits and we inspect/test only 4 of these does this equate to a sample size of 50% and if we ended up testing all 8 would this equate to a 100% sample. 


The bit that's bothering me is sampling to me means that we look at the wiring accessories/connected equipment for safe continued use including signs of over heating, arcing, smell, touch, suitability for location etc in addition to the physical tests deemed necessary with your test meter. 

So even if we tested all 8 circuits and carried out a 25% sample size this would equate to 2 circuits being sampled ,is this correct?


Regards 

Ts

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  • 0
    Just try this test first. You carry out a portable appliance test on 50% of items in a building, what do you conclude about the other 50%?


    Have a look at my standard specification described on the thread below. That clarifies the difference between inspecting and testing and sampling.
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  • 0
    Just try this test first. You carry out a portable appliance test on 50% of items in a building, what do you conclude about the other 50%?


    Have a look at my standard specification described on the thread below. That clarifies the difference between inspecting and testing and sampling.
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