Max Wattage For 15 Amp Circuit 1.5 to 37 volt 30 amp power supply Circuit amp 2021 watts What are the max watts on a 15/20 amp circuit? What are the Max Watts on a 15/20 Amp Circuit? - Builder's Calculator 1.5 to 37 Volt 30 Amp Power Supply Check Details What are the Max Watts on a 15/20 Amp Circuit? - Builder's Calculator Check Details ← Is 120 Volts 110 Or 220 What Is Ohm's Law Formula → Share with friends Link copied