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What kind of meter must use its internal power to check a load or circuit?
Wiki User
∙ 8y ago
The fact of your asking really says you would need a lot of coaching to keep you out of trouble here. Meters, by nature, aren't really designed to be dependably or safely put into electrical outlets. I suggest you buy a outlet tester at your local home store for $6- or so. Instructions are with it, and all you do is plug it in- generally two green lights is good, any red is bad, none is dead/no voltage. If you are inside a power panel and asking this, I refer you to the first sentence above :) lbg
I would love to help you, I just need to know what type of meter you are using. There are so many you could possibly have. Post another question and I'll see if I can help.
Andy
Wiki User
∙ 8y ago
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How do you test the power in a circuit?
A volt meter will do the job.
Why the power must be off when checking the resistance in the circuit?
an ohmmeter contains its own power source that it uses to test the circuit. if power is still on in the circuit, at the least the meter will give incorrect readings, at the worst the meter may be damaged rendering it useless.
How do you carry open circuit test on power transformer?
A Linear power transformer coil? use an Ohm meter and check the resistance of the coils. No resistance is an open circuit. Also check for a cross circuit from one side of the transformer to the other.
What should be observed when connecting a volteter into a DC circuit?
polarity is of major importance in dicect current circuits. <<>> When using meters please remember that a volt meter does not connect into a circuit, the leads are placed across the component that you are measuring. It is an amp meter that connects into the circuit, becoming part of the circuit, to measure the current flowing through that circuit.
When using air conditioning is the cost of power the same on a 115 volt circuit using 9 amps same as 230 volt circuit using 4.5 amps?
Yes. Power in both cases is 1.035 KW. Your meter shouldn't know the difference.
What meter must NEVER be connected to a circuit when the circuit power is turned on?
An Ohmmeter.
How do you test the power in a circuit?
A volt meter will do the job.
Why the power must be off when checking the resistance in the circuit?
an ohmmeter contains its own power source that it uses to test the circuit. if power is still on in the circuit, at the least the meter will give incorrect readings, at the worst the meter may be damaged rendering it useless.
What must be disconnected from a circuit under test before connecting the ohm meter to the circuit?
You must always disconnect the power supply from the circuit before connecting an ohmmeter.otherwise the meter may be damaged.
If you have no power windows power locks or power to the moonroof but all your fuses check good what else should you check?
check the circuit braeker
How can you check a many volts in the power source?
voltage meter
Does a volt meter takes power from the system?
No it does not. A volt meter only reads the current that is passing through it.AnswerAll instruments draw some (albeit tiny) current from the circuit under test in order to operate. So, if this is what you mean by 'taking power from circuit', then the answer is yes, it does.Instruments also change the normal resistance of the circuit being tested -for example, ammeters increase the resistance of the circuit into which they are connected, while voltmeters decrease the circuit resistance across which they are connected. So adding a voltmeter (or an ammeter) to a circuit affects the operation of that circuit to some degree. To minimise this interference, it is important that an ammeter's internal resistance is very much lower than the circuit's resistance, and a voltmeter's resistance is very much higher than the circuit's resistance.
What Effect does battery capacity on a circuits internal resistance?
Batteries are rated as ampere/hour any circuit that draws power from it effects it. The lower the internal resistance of the circuit the shorter the useful battery life as discharged.
Why is the resistance of volt meter very high?
So it doesn't effect the circuit being tested. If a low impediance or resistance meter were inserted in the circuit, voltages may drop and effect the accuracy of the test. Any voltmeter will use some power from the circuit to make a reading. A "high impediance voltmeter" will use very little power from the circuit so the voltage reading will be as accurate as it can be.
How do you check an amp wire for power?
test light or volt meter
How do you carry open circuit test on power transformer?
A Linear power transformer coil? use an Ohm meter and check the resistance of the coils. No resistance is an open circuit. Also check for a cross circuit from one side of the transformer to the other.
Ceiling fan quit working no power at switch circuit breaker not tripped?
I have seen cases where an open breaker is the cause of such problems. It appears to be on, but is open internally. Check the voltage with a meter or temporarily piggy-back the fan circuit on another breaker. If it isn't the breaker it is a connection somewhere in the circuit leading to the fan switch. If the power is coming from a GFCI outlet, check that. Otherwise, you start at the breaker measuring voltage and then try and find other spots in the circuit before the fan switch and check voltages there. You can also go a bit high tech and buy a signal tracer for about $30 and check out the circuit wiring. Then there is always an electrician who will likely find the problem quickly.
