Determining acceptable single-pulse heating in a wire coil
Put in 5A DC measure ‘C/W rise above ambient at 64% thermal time constant then simulate the real power with actual Z(f) V(t) for each part.

estimate insulated temp rise of copper from rise in DCR Resistance with the change in current,

Compute Rjc,then fusing margin from T rise. Done.
The internal wire time constant from current will be 
 faster yet higher ‘C/W than the exterior using thermocouple which is cooler yet  more mass.


remember to shunt the current with RC snubber when opening the switch or reduce Vdc slowly.


i prefer falstad’s simulator for power measurements.

so the critical constant is the tempcoefficient (tempco) for copper with resistance and the thermal resistance coefficient ‘C/W due to insulation.

Next after high duty cycle is external temp.
N.B.  I forgot to mention there will be ahellofalot of energy stored, so there are safer methods using low frequency alternating current limited by square wave and current sense regulation.