Most commercial toaster ovens are able to plug into a standard wall outlet. However, some of the larger models may require a higher voltage, like 208 or 230, in order to operate. They may also require their own dedicated circuit to prevent tripping the fuse, so be sure you have enough room in your breaker box as well. The exterior dimensions of the oven are also important to consider. Typically, the width of the oven is the most important as it gives you an idea of the oven’s footprint and how much countertop space it will take up. However, the depth of a toaster oven is also important to keep in mind as you will also need enough space in front of the unit to add and remove product from the oven. Be sure to leave a little clearance around the machine as well to allow the oven to breathe properly and prevent your walls from heating up.