[TowerTalk] 160 meter vertical question

[VE2RYY]

Hello
I am planning putting up a 120ft tower for 160 meter . It is a guyed tower.
This tower will be for 160 meter only....no antenna in the tower.
I would like to have an advice on the insulators spacing on the guy wires.....I was told every 27 ft would be ok....but I am not sure.....
I would appreciate any input about the spacing of strain insulators on guy wires....for this vertical....
Thank you very much .
NOEL