No, there isn't a fuse *in* the wires coming directly from the alternator on a 1993 Ford Topaz (or most cars, for that matter). The alternator's output is protected by fuses and circuit breakers elsewhere in the vehicle's electrical system. These protective devices are typically located in the fuse box (often under the hood and/or inside the car) and are designed to protect the wiring and other components from overcurrent situations.
The alternator itself has internal regulation to prevent excessive current, but the main wiring and circuits it feeds into are protected by external fuses and circuit breakers. If you're having electrical issues, check your fuse box first.
