Hence to SAFELY operate this oven over an extension cable, you will need to have at least a 16 Gauge Wire. All breakers have a certain Amperage rating beyond which the circuit will trip. This doesn't seem right to me. For 600W advertised output, the XLi-800 efficiency would be: (600W/430W)x100 = 139%.

The XLS-1002 back panel says it needs 175W @ 120VAC for power input. or whether the power supply is 'Linear' or 'Switching', the output power cannot under any circumstances exceed the power coming into it (can never exceed 100%). The circuit, the cabling, the breaker, or the fuse installed are all based on the input wattage rating of a device. It is always less than Input power.

A 1500W Input Power pertains to 12.5 Amperes and a 1200W Output pertain to 8.5 Amperes (at 120 Volts). A forum community dedicated to professional electricians, contractors, and apprentices for residential and commercial work. This is why the term “ Efficiency ” comes into place. At direct current (DC) and low frequencies, voltage and current measurements are simple and straightforward. For a better experience, please enable JavaScript in your browser before proceeding. I'm getting some odd things happening on one of my machines and hoping that someone could help. In short, a countertop microwave oven that has an input power rating of 1500W, with corresponding input amperage rating of 12.5 Amps and connected to a receptacle, should be connected to a breaker that is 16 Amps or higher in rating (80% of 16 Amps is roughly 12.5 Amps). The (output power divided by the input power) times … Just out of curiosity, I've noticed the power-input label on the XLS-1002 reads 175-watts while it's rated output is 700-watts into 4-ohms (both sides driven). It reads 430-watts input, but is rated for 600-watts output into 4-ohms (both sides driven). One sheds light on the circuit design, energy consumption and the other tells you about how well and quickly it will heat up the food. Also Read: What Size of Microwave Oven Fits a Dinner Plate? What does the drive HMI read current wise. This is typically because high powered microwaves are generally more durable and larger than low powered models. A Typical 30 Amp Circuit Breaker. Each and every specification for a certain kitchen appliance matters.

We take 139% and multiply it by .707 (which is how we convert from Peak to RMS or 'average' power). ataylor Posts: 3. My guess is that the input power label is assuming normal use. We have already established that input wattage directly relates to the input current above. However, in reality, the efficiency can differ greatly from model to model. Here we learned comprehensively about the microwave power rating. Come join the discussion about trade knowledge, tools, certifications, wiring, builds, scales, reviews, accessories, classifieds, and more! Copyright © 2020. The breaker size is chosen based on the circuit requirement taken from the INPUT WATTAGE of the connected devices. According to US standard, breakers should be used at a maximum of 80% of their rating IF the devices are connected to a receptacle/socket. A typical microwave oven has an efficiency of about 65%. In short, both wattage ratings matter. However, they both relate to different characteristics. When you see a microwave oven that has an input wattage of 1500 watts but an output wattage of a 1000 watts, you will take the input wattage when considering the size of the breaker, the size of the fuse and the gauge (diameter) of the cables. Just out of curiosity, I've noticed the power-input label on the XLS-1002 reads 175-watts while it's rated output is 700-watts into 4-ohms (both sides driven). Input-power listing vs Output-power rating. In other words, a microwave that has an input wattage rating of 1500 W and output Wattage of 1000W, would be billed based on the 1500 W rating. Input Power is the power, which is required by the appliance at its input i.e., from the plug point.

So, the input power is always larger than the output power. Built with and Bootstrap. The other important consideration is that it pertains to the amount of current the microwave will draw from the wall.

Why are Input and Output Wattage Different? Meaning only 65% of the input power is transformed into microwave power for heating the food.

Now, given that efficiency even in class D rarely exceeds 90%, how do we get more out than what goes in?

The first important consideration is the circuit design.

The output wattage matters to you as a typical buyer. Another important consideration is cabling. If you want to get involved, click one of these buttons! The "difference between" input power and output power is the loss of power within the motor. Normally, the E at the power-input (120VAC) is not stated in PP values, but rather RMS, so is .707 of peak, therefore the resulting power input requirement of the amplifier is in RMS which in the case of the XLS-1002 is stated as 175W on the back panel. If you cannot find the wattage ratings, it is advisable to talk to the customer service of the manufacturer. So which microwave wattage input or output matters when choosing. Is the amp clamp accurate at the frequencies the output puts out? Also Read: Best Simple and Basic Microwave Ovens. They're not directly comparable. Higher powered microwave penetrates the food better and also allows you to speed up the heating process.eval(ez_write_tag([[300,250],'kitchengearoid_com-leader-2','ezslot_13',114,'0','0'])); The following are the typical output wattage rating for home microwaves. Or about 212W-RMS/ch into 4 ohms and (200x0.707) 141W-RMS/ch into 8ohms. It looks like you're new here. We've determined that the issue with the machine isn't the VFD, it's working just fine....but I'm still curious as to why this happens. In this case, it controls the amount of 'power' delivered to the load (speakers) at an audio-rate. It wil draw more wall current doing that but there is no reason for them to rate the AC input wattage at a number that reflects testing, not usage in the real world. Some VFDs can generate so much electrical noise back into the supply that a clamp on meter will be inaccurate even on the line side of a VFD.

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