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pat testing questions

Former Community Member
Former Community Member
Today I failed my pat testing exam. I was presented with questions not covered by the tutor during the course and cannot find clarification in the iet book I was hoping to get some answers.


A few of the questions where about rcd sockets outdoors, the maximum trip time and trip values as well as minimum and maximum amperage.


Another 2 was about test probe leads, the question answers had options like bs codes and gs38 and also voltage ratings like 20-200v ac and 20-200v dc. But none of this was covered in the course.


I failed by a single mark. Had these been covered or easy to find in the book I would have passed. Can anyone offer clarification in relation to this information?
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  • Former Community Member
    0 Former Community Member
    well my knowledge is enough that i can wire up a house, i know ring mains run on 2.5 twin core and earth running off 32amp breakers, lighting ringmains run of 1.5 twin core and earth with a 16a breaker, i know that mcbs must be in place and the distribution unit should now be all metal construction.  i also happen to know that if working with a 3 phase, each rail/phase should ideally be balanced to have the same total amperage across them, but practicality doesnt always happen.


    i also get certain other elements like selvs, how cookers, showers and boilers USED to be required to be on thier own ring main but due to modern technology this is now not a requirement as most of these things run on a 13amp fused plug anyway.


    i also know that electrical outlets must be a certain distance from sources of running water (sings, baths, showers) but cannot recall at time of writing this that actual distance. i believe its 2.5m? i know your not meant to be able to touch an outlet and source of running water at the same time.


    my knowledge often wains in the finer details such as trip times due to typical "industry standards" or adopted standards. example being trip times of rcds/rcbs being generally the same either due to law or standard so you can buy these products knowing that they will function because of those laws or standards.


    hopefully that clarifies some of the extent of my knowledge. mostly its things like the laws reguarding bs ens, stuff like gs38 and alike. most health and safety stuff i have enough knowledge to work out whats what. like a statement and what it pertains to such as pewer and hasaw etc etc. anyway, i got a retest on the 19th september and been looking for a reliable online mock exam (preferably for free) but cant seem to find a good one to practice with and use to learn more.
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  • Former Community Member
    0 Former Community Member
    well my knowledge is enough that i can wire up a house, i know ring mains run on 2.5 twin core and earth running off 32amp breakers, lighting ringmains run of 1.5 twin core and earth with a 16a breaker, i know that mcbs must be in place and the distribution unit should now be all metal construction.  i also happen to know that if working with a 3 phase, each rail/phase should ideally be balanced to have the same total amperage across them, but practicality doesnt always happen.


    i also get certain other elements like selvs, how cookers, showers and boilers USED to be required to be on thier own ring main but due to modern technology this is now not a requirement as most of these things run on a 13amp fused plug anyway.


    i also know that electrical outlets must be a certain distance from sources of running water (sings, baths, showers) but cannot recall at time of writing this that actual distance. i believe its 2.5m? i know your not meant to be able to touch an outlet and source of running water at the same time.


    my knowledge often wains in the finer details such as trip times due to typical "industry standards" or adopted standards. example being trip times of rcds/rcbs being generally the same either due to law or standard so you can buy these products knowing that they will function because of those laws or standards.


    hopefully that clarifies some of the extent of my knowledge. mostly its things like the laws reguarding bs ens, stuff like gs38 and alike. most health and safety stuff i have enough knowledge to work out whats what. like a statement and what it pertains to such as pewer and hasaw etc etc. anyway, i got a retest on the 19th september and been looking for a reliable online mock exam (preferably for free) but cant seem to find a good one to practice with and use to learn more.
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