tivolo writes:

Our A/C will shut itself off intermittently only to start working again
some time later (sometimes 10-15 minues, sometimes hours). We had two
HVAC technicians come out (from the same company no less), both of whom
diagnosed the problem as the condenser overamping (pulling 20 amps when
only rated for 18).

That's not a diagnosis. A mere 10 percent over current spec isn't
significant anyway.

Whaddya mean "shut itself off"? Overtemperature cutout switch? Several
minor things can cause this, including overheating from short cycling, weak
run capacitor, or a sticky condenser fan.

Your technicians sound less than fully competent.