N.C. Gen. Stat. § 53C-6-11

(1) Any bank may continue to recognize any act of an attorney-in-fact or other agent until the bank receives actual notice of the principal's death or a written notice of revocation signed by the principal who granted the authority or, in the case of a company, evidence satisfactory to the bank of the revocation. Payment by the bank to or at the direction of an attorney-in-fact or other agent before receipt of the notice is a total discharge of the bank's obligation as to the amount so paid.

(2) Notwithstanding that a bank has received written notice of revocation of the authority of an attorney-in-fact or other designated agent, a bank may, until 10 days after receipt of notice, pay any item made, drawn, accepted, or endorsed by the attorney-in-fact or agent prior to the revocation, provided that the item is otherwise properly payable.