2391

[sparky71]

Sat my 2391 in aug got the results back over the phone failed
Did not say what area I failed on
Is there any way to revise and remember all gn3

 

[p11jor]

No worries.....all broken down its not bad at all just all in one go seems a bit daunting, just go for a little bit of a time at revision. One test procedure each night and you will blast it!

Then section A just little stuff to boost your marks I.e Minor Electrical Installation works certificate instead of minor works

don't forget the 3 seperate documents after a installation is Electrical Installation Certificate, Schedule of Inspections, Schedule of test results

Check sharp edge on Conduit, inspection lids secure, conduit screwed up correctly,......that's another 3pointer

 

[sparky71]

Thanks for helping
Nice one !

 

[p11jor]

No problem anything else your unsure on give me a shout

 

[sparky71]

I will do

 

[sparky71]

Another question in the exam question was how
Get max earth loop impedance
And calculating zs ?

 

[p11jor]

Your maxium zs for each different type and size of breaker are on what used to be page 49 of red regs but will have to check what page green.....think like page 53

You can calculate your zs by taking your R1 + R2 value of a circuit and adding that To your Ze (reading from consumer back to sub)

 

[p11jor]

Also though if you have a RCD in place then your maxium Zs can be 1667 but if it's over 200 then it's wise to investigate ( states the regs )