Will My Shop/Home Wiring Be Overloaded One Day?

Go off the nameplate on each unit. Ohms law will dictate load. However, FLA is going to be higher. Nominal voltage will more than likely be less than 230 volts.
Example, 220 Volts, 2000 watts.
2000/220= 9.09 amps

E=IR (Voltage= Current x Resistance)
P=IE (Power-Watts= Amperage x Voltage)