geoffait
Been away a few day's. Good question.
"Mini dot" or nail polish to remember. Should the need to remove it.
As to current flow. Well it is an AC fuse. My bench test are to mark
any measurable difference directionally in the fuse. I.e. reversing
it in the fuse holder.
Test 2. fuse inserted in line. Then with my sine wave & square wave generator to scope. I run several sweeps. Then same thru bench speaker selected tones for any at the moment audible differences.
BUT! When all is said an done it has proven to be only .Say 95% correct
on which way to initially insert the fuses in a Pre-Amp or etc..
Never hoped for 100% sure thing..
Tube44

