Tridonic pc 170 t8 pro the tridonic pc 170 t8 pro is a non dimmable high frequency ballast to run 1 x 70 watt 6ft t8 fluorescent tube tridonic article number 22176171 tridonic pc 170 t8 pro high frequency ballasts have an average life of 50 000 hours click here to see data sheet and wiring diagrams