Hi can anyone take me through step by step of best way to test a domestic board and explain how to do tests as I know how to do most of them but not 100 percent I'm a 1st year apprentice so just looking for help thanks
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i used this years ago when at college for the sequence of testing...
the first 3 tests are dead tests and the last 3 are live tests... obviously, a ring main will require 'end to end' resistance readings carried out first, this will then enable you to have an idea what the r1+r2 reading will be...
RIPPER
R - R1+R2
I - Insulation Resistance
P - Polarity (dead)
(energise circuit)
P - Polarity (live)
E - Earth Loop
R - RCD test
maximum Zs reading for MCB amperage/type is very handy to know or at least have sufficient literature for reference....!
i used this years ago when at college for the sequence of testing...
the first 3 tests are dead tests and the last 3 are live tests... obviously, a ring main will require 'end to end' resistance readings carried out first, this will then enable you to have an idea what the r1+r2 reading will be...
RIPPER
R - r1+r2
I - Insulation Resistance
P - Polarity (dead)
(energise circuit)
P - Polarity (live)
E - Earth Loop
R - RCD test
maximum Zs reading for MCB amperage/type is very handy to know or at least have sufficient literature for reference....!
Reply to the thread, titled "Domestic testing" which is posted in the under the Domestic Electrician Forum on Electricians Forums.