Zs tests on radial circuits?

[Gtbadboy1]

you are correct mate double the length will include the R1 and R2. I must be blond

 

[Deleted member 26818]

Of course, that's without applying any correction factors.
My understanding is that you would multiply that figure by 1.2 to obtain the Zs for a 70° conductor temperature.

 

[telectrix]

either that or use the corrected value for the max.Zs (as in OSG).