Larger 1000-1100 watt microwaves absolutely require a 20 Amp breaker for safe and optimal use. Though a 15 Amp circuit is generally sufficient for lower-wattage (600-700 watt) microwave ovens, a 20 Amp circuit is still the recommended size for safe and reliable use.

The microwave oven needs a dedicated 20-amp, the 120/125-volt circuit to feed it. This will require 12/2 NM wire with a ground. Microwave ovens come in different varieties and sizes. Some are countertop models, and other microwaves mount above the stove.

A 1000 watt microwave requires about 1700 watt of wall power. That would be 14 Amps. You need at least a 20 Amp circuit for a microwave. Even without anything else on the circuit.

According to the United States Department of Energy, refrigerators have an average wattage of 725 watts, which, at 120 volts, computes to an amperage of 6.04 amps.

Can a microwave and refrigerator be on the same circuit?

According to the 2020 version of the NEC, you can't power a microwave and refrigerator on the same circuit because each of these appliances requires a dedicated circuit, which is one shared by no other appliances or lights.

The microwaves require a 120 volt, individual, properly grounded branch circuit with a 3 prong grounding type receptacle protected by a 15 or 20 amp circuit breaker or time-delay fuse. Over-the-Range microwave models should always be on a dedicated circuit.

Why does my microwave keeps tripping the circuit breaker?

The answer: The microwave is overloading the electrical circuit. In other words, the circuit is rated to handle a certain amount of amps (unit of electrical current), and the microwave is exceeding that amount, causing the breaker to trip.

Microwaves require a 20-amp branch circuit due to constant load and spike issues. Under strenuous use, a microwave could draw nearly the maximum 15 amperes of current regularly for hours. Under this maximum load scenario, 14- gauge wiring could heat up beyond safe levels.

Microwaves need a dedicated circuit for safe operation. It's not unrealistic to see a microwave plugged into a wall outlet, but some models need more power. Large microwaves can draw 1500 watt of power, which requires a dedicated circuit.

A microwave should be on its own breaker. If other appliances are on the same circuit it could overload and trip the breaker. The standard for electricity in the United States is 110–120 volts of alternating current.

Electrical plugs designated as 20-amp will not fit into 15-amp outlets. A 15-amp circuit is usually served by 14-gauge wire and is protected by a 15-amp circuit breaker or fuse.

What size breaker do I need for a 700 watt microwave?

Microwaves require either a 15 amp breaker or a 20-amp breaker, depending on their wattage requirements. Microwaves that use 600 to 700 watts can get by with a 15-amp breaker, but microwaves that use over 700 watts should have a 20-amp breaker.

Generally with fuses as long as you replace it with a fuse having the same rating it is OK to do so. Although ceramic fuses do offer better thermal and arc protection than glass fuses which is why they're used in microwave ovens and other high current appliances.

Is it safe to use an extension cord with a microwave?

We strongly recommend that an extension cord not be used with a microwave due to potential safety hazards under certain conditions. Your microwave should be plugged into its own properly grounded, dedicated electrical outlet to prevent the flickering of the lights, blowing of a fuse or tripping of a circuit breaker.

How many appliances can you run on a 20 amp breaker?

Conclusion. The maximum number of electrical outlets you can run on a 20-amp circuit is ten. Ten outlets will power devices and appliances without exceeding the 80% capacity rule for residential electrical wiring.

The average American TV is 50 inches and uses 0.95 amps at 120 volts. That works out to an average TV power consumption of 113 watts. In a given year, the average TV will use 142 kWh and cost a little over 17 dollars (assuming 5 hours of use per day).

Household dishwashers use 10 amps of power, mostly. Having said that, your breaker should be on a higher rating than the appliance being used for safety purposes.

An important note to remember is that circuit breakers can only handle about 80% of their overall amperage. That means a 15-amp circuit breaker can handle around 12-amps and a 20-amp circuit breaker can handle about 16 amps.