Where is the shortest distance for the ignition spark to jump in an oil burner?

The shortest distance for the ignition spark to jump in an oil burner is between the cap and the electrodes. This distance is critical for effectively creating the spark that ignites the fuel-air mixture. In an oil burner, the electrodes are specifically designed to generate a high-voltage spark to ignite the oil mist that is sprayed from the nozzle.

The design and positioning of the electrodes in relation to the cap ensure that the spark can jump easily when a voltage is applied. This short distance reduces the energy required to create the ignition, making the process more efficient and reliable. A proper spark is crucial for achieving safe and effective combustion within the burner.

In contrast, while the combustion chamber, oil nozzle, and fuel line are integral parts of the oil heating system, they do not play a direct role in the ignition spark's distance. The combustion chamber is where the combustion occurs, the oil nozzle is responsible for atomizing the oil into a fine mist for better combustion, and the fuel line transports the oil from the tank to the burner. None of these components are designed to facilitate the spark ignition process as effectively as the cap and electrodes.