The preheating time is generally 5~ 10 minute. Different power, smaller ovens preheat faster, and many ovens have the function of reminding after preheating. The working principle of the oven is to bake food with radiant heat from electric heating elements, which can make roast chicken, roast duck, toast, cake and so on. The oven needs preheating before baking. The specific preheating time is related to the preset temperature and oven power. The color of the oven heating tube can also help to judge whether preheating is completed.

The specific preheating time is related to the following factors:

1, preset temperature and oven volume: the higher the preset temperature, the larger the oven volume and the longer the preheating time.

2. Oven power: Generally, the preheating time of the oven is 5~ 10 minutes, but the larger the power, the smaller the oven and the faster the preheating speed.

3. Heating pipe color: When preheating, the heating pipe inside the oven changes from red to black, indicating that it has been preheated.

The temperature of the oven can be adjusted within 50-250 degrees, which can make very delicious food. Preheating the oven is to quickly reach the temperature required for baking. If the oven is not preheated, the cooking time will be prolonged, the nutrition of food will be lost, and the preheating time of the oven will be long, which will also waste electricity and shorten the service life of the oven. The preheating time of the oven is short, which can not achieve the purpose of preheating the oven. So it is necessary to accurately grasp the preheating time of the oven. The oven can lock in nutrients and leave delicious food. Ensure the taste of food, but also ensure the color, fragrance and taste.