The days of replaceable filament lamps being used in voltage indicators has long gone as far as most people are concerned, there cannot be many left in use and there cannot be many testers that they can be fitted in left in use and any that are may well have had a retrofit LED lamp fitted.
I know that modern testers are not infallible, but I bought a new Fluke T150 and a Fluke T6-1000 today which I along with the good quality testers I already have means I can double check in situations where I doubt the effectiveness of the means of isolation.
When I am working I normally have at least two means of measuring voltage readily to hand.
The days of replaceable filament lamps being used in voltage indicators has long gone as far as most people are concerned, there cannot be many left in use and there cannot be many testers that they can be fitted in left in use and any that are may well have had a retrofit LED lamp fitted.
I know that modern testers are not infallible, but I bought a new Fluke T150 and a Fluke T6-1000 today which I along with the good quality testers I already have means I can double check in situations where I doubt the effectiveness of the means of isolation.
When I am working I normally have at least two means of measuring voltage readily to hand.
