This term also called live, or hot, which means that a voltage is present and it can cause an electrical current. any time an electrical current is present, there is a risk of being shocked.

Explanation:

Energized means to give vitality. In this case, it's energized, the word energetic could be wrong, because the statement says that a voltage is present which cause an electrical current, so the contact with it, will "give energy" (literally) if the current is high, there's a risk of being shocked.

As an example, we can consider a medical context, when doctors try to bring to live someone, they begin to give him electrical pulses with the machine, which energizes the body of the person that is in comma.