Probewell MT-1/WT3, User Manual, Page: 42 / 86

MT-1/WT3 User Guide
Page • 41
Example 8: Meter tested in the meter shop
The MT-1/WT3 can be used as a test board in the meter shop to check both single-
phase and three-phase meters using a single-phase 4-jaw meter base mounted on
the wall. The meter base must provide a voltage of 120V or 240V on the 2 upper jaws
with a capacity of at least 150VA. The meter base's voltage must respect the nominal
voltage value of the meter under test.
Before inserting the MT-1/WT3 in the meter base, you must set the form selector
switch in the back of the tester at the 1S/2S/15S position so that the MT-1/WT3 is
powered from the 2 upper tabs (see Appendix C). It is recommended to use a holding
ring to secure the MT-1/WT3 in place.
Once installed, the test procedure is the same as testing in the field.