A new line of seven portable generators features ground fault circuit interrupter system for all receptacles, including 120v and 240v twistlocks. Sensors monitor all outlets for current leakage and trip the main circuit breaker in the event of leakage, the company says. It triggers the main circuit breaker. Models range from 2,500 to 6,600 watts. A rotating field alternator has automatic voltage regulation and separate excitation winding. List prices range from $1,515 to $3,906, and the units carry a two-year complete warranty.