The Flex LW 1202 S has is 13 AMP wet grinder for more flexibility under mobile conditions. The GFCI operator protection circuit breaker integrated into the power cord allows the two-handed grinder to be operated independently from an isolation transformer. Caution: For safety reasons, this unit should be operated only in conjunction with the GFCI operator protection circuit breaker!FLEX GFCI operator protection circuit breaker:For electrical safety during wet grinding. Cuts out extremely fast with the required response sensitivity (less than 15 milliseconds). It has re-actuation protection at power interruption.FLEX metal composite housing:A classic of sandwich construction design by FLEX. A tough, heat-resistant, light aluminum die-cast outer shell. On the inside a highly insulating plastic shell for electrical protection and motor noise reduction. Plus solid brass carbon holders for optimal heat dissipation.