Zermalmer, March 2020
No guarantee, no responsibility on harms on your devices.
No responsibility on you accuracy of your measurement or any measurment uncertainity.
You have to know what you do.

50 turns

diameter of paint wire 1,5mm

diameter of turns = 75 mm 


measured inductance with LCR meter @ 100 Hz ~ 100,4 uH
measured inductance with LCR meter @ 1 kHz  ~ 100,1 uH

measured resistance with LCR meter @ 100 Hz ~ 0,185 Ohm
measured resistance with LCR meter @ 1 kHz  ~ 0,183 Ohm

This coil works for me at a:
Fluke 5500A : DC A 550A
              AC A 550A up to 65 Hz
Yokogawa 2858 : AC A 1000A at 50 Hz and 60 Hz

Tips for building:
Good results you will get if the wire turns and the gaps are well sorted and the gaps are regulare.
Best result I had was ~90 uH before final mounting. (end result see above)

The spread angle over a circle are little bit more than 180°.

Also it is usefull to measure the inductance before making a final mounting, to be be sure to 
fit the needings of the current source.