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Yes. Even with no power to the light, there is still power to the switch. To power off the switch you usually need to open a circuit breaker.

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Q: Is it normal for tester to show hot on a light switch with it in the off position and no power going to the light it controls?
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How do you use a voltage tester?

First, check if the voltage tester works by placing a tip inside one of the slots of a working receptacle or holding it close to a light bulb which is turned on. If continous flashes or chirps are heard, then it is an indication that the voltage is seen and the tester is working. Ensure that the power for the outlet is turned off from the main panel in order to test a desired outlet. Test the outlet's receptacle -you can insert the tip of the tester inside the receptacle slots. Just ensure all slots are checked as the top set may have been wired differently from the bottom set. Test the hot wires which are inside the outlet. Unscrew the receptacle and pull it out. Insert the tester deep inside the box to test for hot wires which may not be directly connected to the receptacle. If you find them switch them off from the main panel. Next, if you want to test a light switch, just make sure the power is turned off from the main panel. The cover plate must be removed and the tester must be placed closed to the screw terminals of the switch. Once the live wires have been tested, you can remove the screws and pull out the switch. Test the other wires which are in the box. To test a light fixture turn off the power from the main panel then turn the switch to on. Next, remove the bulb which is in the fixture and insert the tester to the bottom of the socket. Once you have confirmed that the power is off unscrew the fixture and test the wires.


How are hearing tests carried out?

You sit opposite of the tester with a set of headphones on. The tester sends a series of low to high frequency's to the head phones and you indicate to the tester that you can hear them, with a nod or push of a button. The tester then works out what frequency's you could or could not hear to work out you hearing. The above is what i went through to get mine checked.


Where can one purchase a portable hardness tester?

One could purchase a portable hardness tester at MCS Direct, and on Amazon. Another place to purchase a portable hardness tester online would be Martrow which offers free shipping in the United States.


What is a neon glow tester?

Neon is a very bright colour!


How do electrical testers work?

An electrical tester is tool used to check if a wire is producing an electrical current. Usually you will just hold it to the end of a wire, if an electrical current is being "induced" a light will glow on the tester, this is a live wire.

Related questions

How can you check if a power window switch is good?

use a continuity tester on the switch itself just hold contacts on tester to contacts on switch and if it reads with a beep or a light your switch is good pending the tester is accurate


How come the breaker is not blown and there is no power to the switch?

You have checked the wire at the switch? Breaker may be bad but not tripped. Loose connection at light or outlet that the switch controls. Use a screwdriver to touch the two terminals on the switch if you do not have a tester. May not be hot side of the circuit, but the neutral.


How can i find out if the live wires i found in my wall are for a light switch or an outlet?

Use a voltage tester held next to the wire. Turn the switch off. If the tester stops beeping then the wires are on that switch.


How do you test a brake light switch?

You will need a small electrical multi-tester to test the switch. Set the tester to "ohms". Disconnect the wiring from the switch. Touch one of the tester leads to one side of the switch and the other lead to the other side. Your reading should be zero. Have a friend depress the brake pedal, and the needle on the meter should swing left to right. If the needle does not swing then the switch is bad. If it swings then the problem is elsewhere in the wiring. The multi-tester can be found at hardware stores, auto parts stores and department stores.


Does video game tester comes under Skilled Occupation List?

I dont think so..bcoz even normal software tester is also not listed....


How do you determine if the light switch has power?

You will need a voltage tester to determine this. Put the tester across the top screw on the switch to the ground wire in the switch junction box. If there is an indication of voltage you can assume that the problem is further down the circuit. If there is no indication of voltage on the top screw then test between the bottom screw on the switch to the ground wire. Sometimes the "hot" is on the bottom screw. If there is no voltage present at the switch you have to work your way upstream towards the distribution panel to see what is interrupting the voltage.


Why does tester show power to light when the wall switch is off?

If you are using a proximity tester that senses current flow in its vicinity, it is possible that the box where the light is connected may also be used as a junction box for a separate device.


Headlamp will not turn on it is a 1995 Jeep Cherokee?

Use a wire tester and check everything from the light switch to the headlight assembly. If there's no voltage at te headlight switch, then trace it all the way to the battery.


How do you fix driver's side power window on your 2002 Chevy Venture It went down but won't go up?

checking your power window switchI had this same problem, first you need to get an eletrical tester with light and ground. you use a flat head screwdriver to pop up the casing that holds the switches. the snaps are located at the top and bottom of the casing. i slid the flathead under the bottom part below the window switches first. once you pop up the casing you will see the connection for the switch that controls the windows. using the eletrical tester. connect the ground clamp to the body of the car (door hing). then you will need to turn the car on but do not start. once the car is turned on insert the point of your tester into each slot a wire comes out of. Each wire controls power for the individual raising and lowering of the passanger and driver side windows. 7 wires total. (1. hot, 2. cold, 3. passanger up, 4. passanger up, 5 driver up (my problem blue wire) 6. driver down. 7/ small grey Auxilary Power to the door speakers.) when you have the tester inserted into a slot. operate the switches to see what control goes to what wire. if your switch is working correctly all wires will light up your tester when the switch is used. if your switch is working correctly, the you will need to begin checking the motor and or power converter. good luck.http://www.2carpros.com/how_to/power_window_3.htmv


Is tester a noun?

No tester is not a noun.


Can chlamydia symptoms resolve from normal antibiotics and then reappear?

They should not reappear. Perhaps the treatment was incorrect, or another infection was not noticed or tester for.


Why Lexus LS400 brake lights don't work Is not the brake switch Any suggestions?

earth leak or fuse if you are certain the sender switch at top of brake pedal is ok.Put tester on circuit to establish feed or no feed