NEC Requirement for Capacitor Discharge Rate
FYI if you see this question come up on the exam.
460-6. Drainage of Stored Charge. Capacitors shall be provided with a means of draining the stored charge.
(a) Time of Discharge. The residual voltage of a capacitor shall be reduced to 50 volts, nominal, or less, within 1 minute after the capacitor is disconnected from the source of supply.
(b) Means of Discharge. The discharge circuit shall be either permanently connected to the terminals of the capacitor or capacitor bank, or provided with automatic means of connecting it to the terminals of the capacitor bank on removal of voltage from the line. Manual means of switching or connecting the discharge circuit shall not be used.
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