A corporation created hereunder may amend its certificate of incorporation to change its corporate name, to increase or reduce the number of its directors or change any other provision therein: Provided, however, that no corporation shall amend its certificate of incorporation to embody therein any purpose, power or provisions which would not be authorized if its original certificate, including such additional or changed purpose, power or provisions, were offered for filing at the time a certificate under this section is offered. Such amendment may be accomplished by filing a certificate which shall be entitled and endorsed "Certificate of Amendment of ______ Electric Membership Corporation" and state:
Such certificate shall be subscribed in the same manner as an original certificate of incorporation hereunder by the president or a vice-president, by the secretary or the assistant secretary, who shall make and annex an affidavit stating that they have been authorized to execute and file such certificate by the votes cast in person or by proxy by a majority of the members of the corporation entitled to vote. Such certificate shall be filed in the same places as an original certificate of incorporation and thereupon the amendment shall be deemed to have been effected.
N.C. Gen. Stat. § 117-25