Question 83Electricity & Electronics - 1st Asst/Chief

The correct answer is A) hook the jaws of the instrument around the insulated single conductor. To properly use a clamp-on type ammeter, the first step is to clamp the jaws of the instrument around the insulated single conductor carrying the current that needs to be measured. This allows the ammeter to measure the current flow without having to interrupt the circuit or make any electrical connections. The other options are incorrect because they do not represent the proper initial step for using a clamp-on ammeter. Shorting the test leads, connecting voltage test leads, or de-energizing the circuit are not necessary or appropriate when using a clamp-on ammeter to measure current.