The simple pug in socket testers give a very basic first line initial clue of some possible scenarios therefore starts you on the path of fault/non fault indication.
It is not a pass/fail device but might just be helpful as your first line of indication.
In other words it might reveal some clues, yet it might not.
Using a proper meter(s) and doing the proper tests in the proper manner and being able to understand the results is the best way of having a chance of obtaining a conclusion.
Having the proper skills and experience is the key.
If someone wants to plug in one of these "Socket Testers" as the first line of an investigation then I have no problem with that, as long as they never, solely, use it to consider something satisfactory/unsatisfactory.
Never forget there is a very important piece of equipment that must always be used - the" Mark 1 Eyeball" just for starters
It is not a pass/fail device but might just be helpful as your first line of indication.
In other words it might reveal some clues, yet it might not.
Using a proper meter(s) and doing the proper tests in the proper manner and being able to understand the results is the best way of having a chance of obtaining a conclusion.
Having the proper skills and experience is the key.
If someone wants to plug in one of these "Socket Testers" as the first line of an investigation then I have no problem with that, as long as they never, solely, use it to consider something satisfactory/unsatisfactory.
Never forget there is a very important piece of equipment that must always be used - the" Mark 1 Eyeball" just for starters

