"Are you thinking, what would happen if you do such a thing by a MISTAKE or are you thinking of placing some load on existing wire?"

tkamiya, I'm thinking about what would happen if one did that by mistake. thanks for the info, and brian brought up an interesting point about the risk/time factor.

another reason for asking is that looking through the archives I hear some people putting in a higher-amp fuse for a fuse slot that requires a fuse with a lower amperage either diagnose a problem or just that the lower-amp fuse was insufficient.