Myself and friends tested fuses, cheap buzz fuses ,including Acme fuses can vary up to 15+% of the rated value ,premium fuses much more accurate within 1-2% , I use slightly bigger
under 1/4 amp difference in a premium fuse at most
Time fuses have less chance of blowing on start up .
under 1/4 amp difference in a premium fuse at most
Time fuses have less chance of blowing on start up .