Without details like the core type, material, AL, etc. the only thing you can do is to use thick wire that can handle 12A or use multiple thin wires which can handle 12A total and wind on the coil and every few turns, take a reading with an LCR or inductance meter. Keep on doing this until you have 150uH.
If you know the AL value of the core, you can calculate how many turns you will need and then do a final tuning to adjust for 150uH.
Hope this helps.
Tahmid.