How deep do you have to have your phone lines? Ours were 150mm, was thinking 300mm?

Question

How deep do you have to have your phone lines? Ours were 150mm, was thinking 300mm?

Answer 1

Deep enough so that you don't mow or plow them up.Not betng flip but it depends on what the land abofe them is ysed for ie if to be plowed then 36 inches or more/if a yard to be mowed then just under the grass root zone.