I dunno.  In modern electronics, fuses generally protect against relatively
catastrophic failures, and it seems pretty likely that increasing the value
of a fuse by an amp or two isn't really that likely to be a terrible thing.
(ie fuses are too slow to protect electronics; they primarilly protect
against fires and such.  Can you actually imaging a failure mode where
your ~3A circuit draws more than 5A but less than 6.5A, and explain why
that's particularly dangerous?)

The 100mA fuse in a meter presuambly protectst the meter movement itself,
right?  Or maybe it stops the shunt resistor from burning up.  So maybe
it's more critical...

BillW

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