N.C. Gen. Stat. § 159-20: Funding capital reserve funds.

Capital reserve funds may be funded by appropriations from any other fund consistent with the limitations imposed in G.S. 159-13(b). When moneys or investment securities, the use of which is restricted by law, come into a capital reserve fund, the identity of such moneys or investment securities shall be maintained by appropriate accounting entries. (1943, c. 593, s. 4; 1945, c. 464, s. 2; 1957, c. 863, s. 1; 1967, c. 1189; 1971, c. 780, s. 1; 1973, c. 474, s. 15.)