MT5 Multi-Tracer Operating Manual
page 81
Appendix C - Module Fuse Replacement
Because PV modules are inherently current limited it is unlikely that a module fuse will
blow. However, a fuse may blow if a high-current module is mistakenly plugged into a
channel with low current rating.
Refer to the section 8
“Changing Module Grounding” for details on opening the Multi-
Tracer load case and accessing this fuse. As describe there, always unplug all PV
modules, and turn AC power off and unplug the AC power cord before opening the unit.
The image below, shows the fuse as positioned for negative grounding. Note: When
negative grounded, the fuse goes in the positive connection leg as shown.
Table 2 shows the fuses to use for a given channel rating. Note: Because Multi-Tracer
loads are built to order, the specific current rating of all possible rated currents may not
be shown in the table below. If not shown, use a fuse rated approximately 20% to 25%
above the current rating of that channel.
Also, the Multi-Tracer fuse must be rated appropriately for the channel voltage. While
high-voltage fuses can be used for low-voltage channels, the reverse is not true. We do