Fluke 5725A - Manual (Page 55)

Installation
Connecting to Line Power
2
2-9
2-9. Connecting to Line Power
Warning
To avoid shock hazard, connect the factory-supplied, three-
conductor line power cord to a properly grounded power outlet.
Do not use a two-conductor adapter or extension cord; this will
break the protective ground connection.
After verifying that the line voltage selection switches are correctly set, verify that the
correct fuse is installed. Connect the 5725A to a properly grounded three-prong outlet.