that may be a bleed resistor. i capacitor stores a charge and even after you kill the power at the breaker you can get shocked by the capacitor (big time!). you must always discharge the capacitor before assuming it is ok to touch. the way i do it is by shorting across the terminals with a screwdriver(with the power off of coarse) usually you'll see a small spark. the recommended way of discharging a capacitor is by using a resistor across the terminals and sometimes the manufacturers install them sometimes they don't.
