- 1). Identify the minimum and maximum meter currents possible for the amp meter.
Every amp meter has a maximum current it will measure. Exceeding this current can cause damage to the meter.
Every amp meter has a minimum current it will measure. Attempting to measure currents less than this will give no useful results. Ensure the current to be measured is between these limits. - 2). Turn off the circuit to the device that will be measured. Ensure that no one turns it on while it is being measured.
- 3). Disconnect a lead that carries the current to the device that is to be measured.
Connect the amp meter into the circuit. Observe the circuit polarity if a DC or grounded AC current measurement is to be made. - 4). Turn on the amp meter, and set the meter to make the measurement desired as directed in the amp meter's instruction. Directions will vary according to the brand of meter with which you are working.
Turn on the circuit to be measured, and read the amp meter. - 5). Turn off the current to the device, and then remove the amp meter from the circuit and reconnect the circuit to its original configuration.
- 1). Identify the minimum and maximum meter currents possible for the amp meter.
Every amp meter has a maximum current it will measure. Exceeding this current can cause damage to the meter.
Every amp meter has a minimum current it will measure. Attempting to measure currents less than this will give no useful results. Ensure the current to be measured is between these limits. - 2). Turn on the amp meter and set it to make the measurement desired. Follow the manufacturer's directions for the amp meter in use.
Turn on the circuit to be measured and read the amp meter. Follow manufacturer's directions for the amp meter in use. - 3). Turn off the current to the device and then remove the amp meter from the circuit.
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