[Al Skierkiewicz]

Tessa,
Eric has perhaps covered all the bases on this one. To satisfy the rules, one and only one PD. However, as things change from year to year, the best method will be to address this through the Q&A when it opens after kickoff.
As a rule of thumb, when a team starts to load up the robot with motors, current does increase. Several teams tripped main breakers during last season for this reason. While the 120 amp breaker can withstand 600% over current for short periods, it is not self resetting. Once it trips you are done for the match.