(1) County bonds for any purpose other than those enumerated in 7-7-2221 and 7-7-2311 may not be issued unless authorized by registered electors of the county voting at an election conducted in accordance with Title 13, chapter 1, part 4.
(2) A bond election may not be called unless the board of county commissioners:
(a) initiates and unanimously adopts a resolution in accordance with the provisions of 7-7-2227 (2); or
(b) receives a petition, delivered and certified by the election administrator, asking that the election be held and the question be submitted. The petition must be signed by at least 20% of the registered electors of the county.