T8 4x32W electronic ballast, 120v-277V instant start, parallel lamp operation , with thermal prot T8 4x32W electronic ballast, 120v-277V instant start, parallel lamp operation , with thermal protection, high power factor, sound rate : A. Low Harmonic distortion, Ballast base must be grounded, Install lamps with 3/4" of grounded metal plane,Class p, IP 65, Type 1 outdoor using, Open circuit ...