cable analysis

Dear sir,

I am doing the analysis of cable but the reactions are coming with an extreme value like 66kn along x. There is no any weight on the cable only self-weight is considered. Kindly explain to me why reactions are so conservative.

Also, guide me on what value of initial tension I should consider. The cable will be used only for an aesthetic look. If there is any need to modify it. Kindly do , It will be really very appreciated.staad File is also attached

Thank you in advance

2604.Structure111111.std