This fuse and holder was removed from one of our oil quench cooling systems which had stopped working. There seem to be 3 things wrong that may have caused the heating. The terminal screw was loose, the fuse screws were both loose and there seems to be some spring contacts misssing from the burnt side. The fact that the load cycles probably accelerated the demise of this. The fuse is still in tact. Incidentally, does anyone know the relevance of the "RED SPOT" on the fuse?
[This message has been edited by pauluk (edited 04-04-2006).]
That looks like a lot of strands for such a small conductor size??? If it is not the standard number of strands for the conductor size, it may not be a Class B stranding type, which most likely would not be permitted in this type of installation.