The 15 amp is equipped with an 1800W element and the 20 amp is equipped with a 2000W element. The 20 amp version will get up to temperature faster than the 15 amp. The 20 amp/240V is more efficient. The 20 amp/120V option will require its own dedicated breaker. Hot Shot ovens come in several different types of configurations based on your needs. With this comes different power requirements from 120V 15amp or 20amp, to 220/240V. Each of these will require a specific outlet/receptacle for you to use the oven. For 120V, Hot Shot offers a 15 amp and 20 amp version on some models. These require different outlets in order to power the oven. The 15 amp is your standard at-home outlet. The 20 amp outlet however has a slight change to it that one of the vertical slots looks like a sideways T.

For 240V you will need the following outlet:

Therefore when choosing a kiln/oven we highly recommend you check your power requirements first. We recommend making sure you have the proper outlet and, if not, to check with a professional about adding an outlet into your work area. DO NOT use extension cords in any situation!