What is the cable ovality test calculation and formulations ?

Ovality (%) = [(dmax-dmin)/(0,5*(dmax+dmin))]*100

or                = [(dmax-dmin)/(dmax+dmin)]*200
                                                                                                                                                                                                                               
dmax = maximum diameter
dmin = minimum diameter

Other methods,

The cable ovality test measures how much a cable deviates from a perfect circular shape. This test ensures that the cable maintains its mechanical and electrical integrity, especially under stress or during installation.