current flow neg to pos?

Interesting seeing the various answers which IMO are variations of my reply, else misleading.... So, to paraphrase... The polarity of the fuse has NOTHING to do with flow direction. It is the HOT polarity that is fused for reasons give above. EG - telcos often have positive ground/earth, hence their fuses are in the negative leg (ie, -ve is HOT). So to0 older English & other +ve chassis vehicles.      "Conventional Current" (which is how we "picture" current) is the flow of positive charges from +ve to -ve (thru the circuit). In reality, electricity is an "effect" and is NOT migrating electrons or particles. VIZ - it can be any combination migrating electrons and -ve ions or particles one way, OR +ve ions or particles the other way. "Naked electrons" need not be involved. And it is not the "movement" of electrons or particles per se - whereas electricity & e-mag travels at or near light speed, electrons only travel a few meters per second and other particles are normally slower. Remember - we only "model" electricity....