Times Square Track Current Limiters are designed to provide an answer to energy limitations on wattage per foot requirements for 120V track installations. Some newer energy codes set a rating of 30 to 70 watts per linear foot of track irrespective of the actual wattage that is meant to be used on the track, unless a current limiting device is permanently installed between the track and the line feeding it. Times Square current limiters are available in over 12 different current ratings.