Blue Sea 8258 AC Analog Ammeter - 2-3/4" Face, 0-100 Amperes AC

The Blue Sea 8258 AC Analog Ammeter is a precision electrical monitoring instrument designed for marine, RV, and industrial applications requiring reliable AC current measurement. This 2-3/4" face meter delivers 0–100 amperes AC monitoring in a compact, marine-grade form factor. Users who need to track alternator output, shore power draw, or AC generator performance rely on this meter's straightforward analog display to maintain operational awareness and prevent electrical system overload.

The meter employs a simple two-wire connection design, eliminating complex wiring requirements while maintaining accuracy across the full measurement range. An AC current transformer is included, allowing the meter to sense and power itself directly from the coil slipped over the conductor being measured—a non-invasive installation method that avoids circuit interruption. The backlit meter face ensures readability in low-light conditions, critical for engine rooms, cabins, and outdoor installations where lighting may be inconsistent or absent.

This ammeter suits boat owners, RV operators, and technicians monitoring AC circuits in 120V or 240V systems aboard vessels and mobile dwellings. Its analog display provides immediate visual feedback without digital lag or power dependency complications. Installation integrates into standard electrical panels or bulkhead mounts; the lightweight construction (0.4 lbs) and compact dimensions (5 x 3 x 7 inches) allow flexible placement in confined spaces. Ideal for diagnostics, routine monitoring, and preventive maintenance of shore power connections and onboard AC generation.