Lesson 3/Learning Event 2
COMPONENT LOCATION AND PURPOSE
FIGURE 24. LOW VOLTAGE CIRCUIT TESTER.
The illustration shows the LVCT with the cover removed showing the various controls, meters, and
connections on the face of the instrument.
Start with the ammeter. It is located on the upper left side of the tester. It has ranges from 0 to
500 amperes to the right of the zero, and from 0 to 150 amperes to the left of the zero. This range
or scale is known as a "minus 150-ampere to plus 500-ampere" range. The minus figures are used
to measure reverse current without reversing the meter leads.