What's that an extra cable in box of FC and FCA series for?
The utility PF rate >95% @ 230Vac at full rated load. From January 1, 2001, two standards !mEN61000-3-2 (power line harmonics) and EN61000-3-3 (power line flicker) !ngo into full effect to all EC countries. All products shipped to EC countries or placed on the market in this area must be compliant to these standards.