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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Discuss Domestic testing in the Domestic Electrician Forum area at ElectriciansForums.net
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 Domestic testing in the Domestic Electrician Forum area at ElectriciansForums.net