Jeff, Sheila, Dan

We got the ok from Chandra to switch on high voltage equipment. We only wanted to switch on the ring heaters though (which are only +-15V so we're not sure why they get switched off?). To switch them on, at the TCS racks (back left corner in the CER) we just flipped the rocker switches on the back of each unit, test masses are now warming up. While we were there we also swtiched the SR3 heater on.