Powers, Scope
Each power that is granted allows the agent to act with the same authority as the principal.  In fact, an agent's authority is so great that the agent is often said to "stand in the principal's shoes." This phrase describes the agent's authority to perform every action that the principal has the ability to perform, just as though the agent and the principal are the same person.

Even though the agent's authority is equal to the principal's authority, the agent is legally obligated and limited to exercising any powers solely for the principal's best interests.

See: Power of Attorney, Revoking; Power of Attorney, Delivery