If dangerous conditions are detected, it will automatically disconnect; reconnecting only after the normal operating conditions have been restored. Diagnostic LEDs indicate wiring faults when you connect your electrical cord to the power pedestal. The voltage protector protects against faults for reverse polarity, open neutral and other wiring issues. Includes integrated surge protection of up to 2,800 Joules (30 AMP), 4,200 Joules (50 AMP). Durable PowerGrip handles make plugging and unplugging easier. It is weatherproof and able to withstand adverse weather conditions when installed in the upright position. 30-Amp male (NEMA TT-30P)/30-Amp female (NEMA TT-30R). 50-Amp male (NEMA 14-50P)/50-Amp female (NEMA 14-50R).