Look for a 30AMP outlet. You will usually find this in the kitchen around the stove and various enclaves where you plug in toasters and microwaves. This is where you can run an SP30 via heaviest duty extension cord if you don't want it competing with the blender noise or coffee grinder noise:
15-amp Circuit
Total Wattage Capacity: 15 amps x 120 volts = 1,800 watts
Safe Wattage Capacity: 1,800 watts x 80% = 1,440 watts
Safe Amperage Capacity: 15 amps x 80% = 12 amps
20-amp Circuit
Total Wattage Capacity: 20 amps x 120 volts = 2,400 watts
Safe Wattage Capacity: 2,400 watts x 80% = 1,920 watts
Safe Amperage Capacity: 20 amps x 80% = 16 amps
30-amp Circuit
Total Wattage Capacity: 30 amps x 120 volts = 3,600 watts
Safe Wattage Capacity: 3,600 watts x 80% = 2,880 watts
Safe Amperage Capacity: 30 amps x 80% = 24 amps