💡An experienced electrician shared some unexpected tips about the tester screwdriver, and I was left speechless! This tool has far more capabilities than most people realize. Here’s what I discovered! 👇 👇
There are different types of tester screwdrivers, some that work with a battery and others without. Those that don’t use a battery simply indicate the presence or absence of voltage.
But those equipped with a battery offer much more, and few people truly know all that they can do.
There’s no need to go into the technical details of how they work – if you’re interested, you’ll find a wealth of information online. Let’s jump straight into the practical stuff!
Before using it, make sure your tool is working properly.
Checking for voltage
A tester screwdriver is, of course, used to check if a wire is live. If the LED lights up, there is current. Be careful not to touch the tip of the screwdriver during the test.
Identifying the polarity of a battery
With this tool, you can easily find the positive terminal of a battery.
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Hold one wire in your hand and test the other end with the screwdriver.
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If the LED lights up, you’ve found the positive terminal.
Testing a cable’s continuity
The principle is similar to that of a standard continuity tester.
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Hold one end of the wire and place the screwdriver on the other.
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If the LED lights up, the cable is intact.
You can also check the status of fuses, bulbs, and many other components.
Testing the grounding of an appliance
Your tester screwdriver can also be used to check if an appliance is properly grounded.
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Let’s take a washing machine as an example: plug it in and touch its chassis with the screwdriver.
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If the LED lights up, it means the appliance is not properly grounded.
Detecting a break in a wire
To detect a power interruption, follow the cable with the screwdriver.
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As long as the LED lights up, the current is flowing.
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If it goes off at a specific point, that’s where the break is.
A little reminder, my friends: these are not electrical engineering lessons, but practical tips for DIY at home!
