may renounce at anytime, in whole or in part, the right of succession to any property or interest therein, including a future interest, by filing a written instrument under the provisions of this Chapter. A renunciation may be of a fractional share or any limited interest or estate. The renunciation shall be deemed to include the entire interest of the person whose property or interest is being renounced unless otherwise specifically limited. A person may renounce any interest in or power over property, including a power of appointment, even if its creator imposed a spendthrift provision or similar restriction on transfer or a restriction or limitation on the right to renounce. Notwithstanding the foregoing, there shall be no right of partial renunciation if the instrument creating the interest expressly so provides.
N.C. Gen. Stat. § 31B-1