safe isolation Am2

[pablo4321]

Hi to do safe isolation on my am2, this monday coming would this be correct procedure, this is a individual circuit, supplying a motor via a rotary switch.Could anyone advise me if this is correct,thanks in advance

identify circuit.
lock off put key in pocket and display warning sign.
check voltage tester for damage
check on proving unit
turn rotary switch to on position
go to motor check for voltage between all phases earths neutrals etc
then check again on proving unit

 

[Matthew Jenkin]

That seems correct depending on the part of the circuit that needs to be worked on you may be able to isolate at the rotary isolator see the Niceic Guide

 

[telectrix]

1st step is to get permission to isolate.

 

[Matt85]

Hi to do safe isolation on my am2, this monday coming would this be correct procedure, this is a individual circuit, supplying a motor via a rotary switch.Could anyone advise me if this is correct,thanks in advance

identify circuit.
lock off put key in pocket and display warning sign.
check voltage tester for damage
check on proving unit
turn rotary switch to on position
go to motor check for voltage between all phases earths neutrals etc
then check again on proving unit

Seek permission to isolate
locate and identify equipment to be worked on
identify means of isolation
withdraw fuses.lock off isolating switches or circuit breakers
fit warning notices at point of isolation
select approved voltage indicating device
verify on proving unit or known supply
test all lines-line all lines- neutral all lines to earth and neutral to earth
if satisfactory re prove test indicator begin work

 

[fuel]

1st step is to get permission to isolate.

Yep, we were told if we dont ask we could fail it even if we do the rest correctly.

 

[Maddison]

I find it helps to count the 10 steps when your testing the phases, at least you know if you've missed one out, tell the examiner and start again, no one wants to fail safe isolation but a lot do so I hear

 

[driverman]

Hi to do safe isolation on my am2, this monday coming would this be correct procedure, this is a individual circuit, supplying a motor via a rotary switch.Could anyone advise me if this is correct,thanks in advance

identify circuit.
lock off put key in pocket and display warning sign.
check voltage tester for damage
check on proving unit
turn rotary switch to on position
go to motor check for voltage between all phases earths neutrals etc
then check again on proving unit

Under exam conditions.....always state checking leads conforming to GS38

 

[pablo4321]

if there is a dol starter whats the best way to do safe isolation on that too any help is greatly appreciated

 

[Plonker 3]

Safe isolation procedure is always the same regardless what you are doing it on.

 

[pablo4321]

i dont really do much three phase so not sure, you test the end of circuit so would i turn dol starter on or rotary switch on then test at motor or test at rotary switch or dol starter thanks

 

[Plonker 3]

Rotary isolator will be you isolation point, or the circuit OCPD.

The tests are in no particular order

L1-N
L2-N
L3-N
L1-L2
L1-L3
L2-L3
L1-E
L2-E
L3-E
N-E

Dont forget to lock off and prove you tester BEFORE and AFTER you have carried the above tests.

 

[pablo4321]

will i test at switch or motor sorry for all the questions just want to be sure also is ocpd the mcb at board.

 

[Plonker 3]

I imagine they will tell you what to isolate and also where to test. Isn't there a info booklet which you recurve before doing the AM2?

 

[pablo4321]

yes but doesnt say anything about it would i be right in thinking lock mcb for that circuit turn the rotary switch on and test the motor side just never done them before cheers

 

[Plonker 3]

Why would you turn the isolator on if you are testing proving it's isolated?

 

[pablo4321]

would you not turn the rotary switch on because if it was of and you locked wrong mcb off the power would only go to the switch and because it is turned of the power wouldnt be detected at motor

 

[pablo4321]

do i test at rotary switch or motor confused now

 

[pablo4321]

help please