§ 77-16-7 NMSA 1978

When the fence is constructed of poles and posts the posts shall not be more than twelve feet apart and of the same size and set in the ground as described in Section 77-16-4 NMSA 1978. The poles [are] to be at least two inches in diameter at the smaller end and [are] to be at least four in number firmly fastened to the posts with nails or wire, the top pole at least four feet from the ground and the bottom pole not more than one foot from the ground and the poles [are] not to be more than one foot apart.