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What is the result on the meter reading of clamping the jaws of a clamp-on ammeter around two wires?
Wiki User
∙ 14y ago
If the two wires are on a parallel feed you would read the current through the parallel feeders. If the two wires are "hot " to the load and return back from the load the meter will read zero. The two magnetic fields that surround the wires when a current flows through them will cancel each other. As a result of this there will be no magnetic induction induced into the sensing coil of the clamp on meter.
Wiki User
∙ 14y ago
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What is current and ammeters?
Current is the amount of electrons flowing. An ammeter reads this value. Typically an ammeter will be placed in series to measure this flow; there are also "clamp on" ammeters that use a small CT. When placed around a wire, the power flowing in the wire will induce a current in the CT, allowing measuremnt without lifting wires.
What is the reading level of The Princess Diaries?
The Princess Diaries (2001) is rated G.
Can you measure AC current on a power cord?
Not very easily. A clamp on amp meter has to go around only one of the circuit conductors. If the clamp on meter is used around the power cord the two wires in the cord have a cancellation effect and the meter will read zero. If you can separate the load's wires that plug into the cord and clamp around that wire you will get a load amperage reading.
How do you connect voltmeter and ampermeter in the curcuit?
Originally Answered: How should an ammeter be connected in a circuit to correctly read the current? Let’s consider DC based circuits first. Ammeters then are connected in series (like in a sequential chain) between the power supply or source (not necessarily the same) and the power drain (or the circuit load). Since we are talking about a DC circuit, the power to the circuit is first turn OFF to prevent sparking (in a large current situation) and to allow the measurement driven modification to be made. I usually measure if any voltage is present at the power leads where the current measurement will be done. The reason for this is to see if there are any sneak power circuits feeding the circuit under test. The circuit is then broken (or opened with either a switch, a jumper plug removal or simply disconnected) on the (usually) positive side of the supply. If you have to physically cut the positive feed wire, make sure that you can reconnect it so that no short exposed wires remain after the measurement. Make sure that you use an ammeter that will be able to appropriately measure the load. As an example if you are trying to measure a current with a supply current in the range of 7.5A, connecting an ammeter that is designed to measure 0 to 1A, then the instrument will most likely burn out. Professionals use ammeters that have switched multiple current range or are using measuring meters that can be shunted with the appropriate range shunt. The meter positive connection (usually a red wire or probe) is connected to the positive source of the power supply. The negative wire or probe (usually a black wire) is connected to the power load (where the circuit was cut/interrupted or disconnected previously. Assuring that everything is done properly, then depending on the meter used turn the power supply on again. As a note if you are using a digital multi-meter, the instrument should be turned on FIRST, perhaps set on the highest current range. Turn the power supply back on and observe the current indication on the meter. As mentioned by other fellow Quorians, if using a current probe, then it is easier but less flexible. For AC based circuits, there are no polarities to worry about but the range issue has to be factored in. The rest is more or less the same procedure. I have been doing electronics, measurements plus remote customer support to solve power supplies issues over the phone for many years and I have seen (and experienced) my share of mishaps, errors, absence of knowledge/hands-on experience. I have seen accidents (some life threatening) so I am sharing a thing or two to help
How did the ways people received news and information change from the beginning of the 1800s to the early 1900s?
In the 1800s, communications revolved around the telegraph, writing letters which were transported by train, reading newspapers, and storytelling. By the 1900s there was the automobile for mail delivery and the telephone.
What does a Clamp-on ammeter do?
It is an electrical device with two jaws that open to allow clamping around an electric conductor. This allows the current in the conductor to be measured.
What is the result on the meter reading of clamping the jaws of a clamp on ammeter around two wires?
If the two wires are on a parallel feed you would read the current through the parallel feeders. If the two wires are "hot " to the load and return back from the load the meter will read zero. The two magnetic fields that surround the wires when a current flows through them will cancel each other. As a result of this there will be no magnetic induction induced into the sensing coil of the clamp on meter.
How do you measure amperage?
The easiest method today is by using a clamp meter. It "clamps" around a single conductor and measures the magnetic field (you can't get a reading by clamping around a regular appliance cord, as both conductors will cancel each other out).
When measuring with an ammeter the ammeter must be connected in?
When measuring a load current, an ammeter is connected in series with the load. The exception is for a clamp on style AC ammeter, which is clamped around one of the conductors, making its measurements as a transformer.
How does electricity move around a parallel circuit?
By the flow of the electricity from a ammeter ( A )
What does the symbol of an A with a circle around it mean?
It is the electrical symbol for an Ammeter (a device that measures current).
What happens when an ammeter is connected wrong?
Ammeters have a low impedance, so if they are incorrectly connected in parallel to your load instead of in series, more current will flow through the circuit and the ammeter will almost act like a short. There is potential to burn our the ammeter.
Should an ammeter always be connected in parallel with a component?
No, an ammeter should never be placed in parallel with a component - it should always be placed in series, so that the current through the component is measured.If you place an ammeter in parallel with a component, you create a short circuit around the component. Depending on the rest of the circuit, you could damage the circuit, damage the ammeter, create a fire, etc. You certainly will affect the current through the component, and that is not what you want to accomplish.
Can you use ac ammeter to measure dc current?
It depends. If it's an inductive ammeter (the kind that clamps around a wire), it won't work at all. If it is the type of ammeter that is actually placed in the circuit, it will work but it won't be accurate.CommentActually, modern 'clamp on' ammeters WILL measure d.c. currents. It uses the Hall Effect to measure the current.
What causes the lubricant to leak out of the ball joints?
Leakage can happen due to low joint articulation. Select ball joint articulation of 50 degree all around. Leakage may happen in the absence of clamping for rubber boot. Select ball joint rubber boot with positive clamping arrangement.
How do tongtester is working?
Tong tester is an electrical device having two jaws that allow clamping around an electrical conductor. It helps to measure the electric current in the conductor.
What is the function of a 5C Collet?
A collet is used for clamping purposes. It forms a collar around an object, and clamps down on it as it is tightened. A 5C collet has external threads used for lathes.
