• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Using unused primary taps on PT?

I have a 280VA main PT with 120v, 110v, and 100v taps on the primary. Using the 120V tap.

Would it be possible/advisable to use the unused 110v primary tap to apply a lower voltage to another PT (say a 35VA filament transformer?)

Effectively using the primary as an autotransformer…

Or will I risk burning out the windings between the taps?