Selecting The Line Voltage; Replacing The Fuses; Line-Power Fuse - Fluke 8808A User Manual

8808A
Users Manual

Selecting the Line Voltage

The Meter operates on four different input line voltages. The selected line-voltage setting
is visible through the window in the line-fuse holder on the Meter's rear panel.
Changing the line-voltage setting may require a different line-power fuse for proper
operation.

Replacing the Fuses

The Meter uses one fuse to protect the line-power input and two fuses to protect the
current-measurement inputs.

Line-Power Fuse

The Meter has a line-power fuse in series with the power supply. Table 2-1 indicates the
proper fuse for each of the four line-voltage selections. The line-power fuse is accessed
through the rear panel.
To avoid electric shock or fire, do not use makeshift fuses or
short-circuit the fuse holder.
2-4
1. Unplug the power cord.
2. Insert a small screwdriver blade into the narrow recess to the left of the fuse
holder and pry it to the right until the holder pops out. See Figure 2-1.
3. Remove the voltage-selector block from the fuse holder.
4. Rotate the selector block until the desired voltage rating faces outward.
5. Replace the selector block back into the fuse holder.
6. Install the fuse holder back into the Meter and reconnect the power cord.
1. Unplug the power cord.
2. Insert a small screwdriver blade into the narrow recess to the left of the fuse
holder and pry it to the right until the holder pops out. See Figure 2-1.
3. Remove the fuse and replace it with a fuse of an appropriate rating for the
selected line-power voltage. See Table 2-1.
4. Replace the selector block back into the fuse holder.
Table 2-1. Line Voltage to Fuse Rating
Line Voltage Selection
100 / 120
220 / 240
XW Warning
0.125 A, 250 V (slow blow)
0.063 A, 250 V (slow blow)
Fuse Rating