What is the minimum distance that a spark shield should extend past the edge of the wheels?

The minimum distance that a spark shield should extend past the edge of the wheels is typically 1 to 2 inches. This extension helps ensure that any sparks or debris generated during operation do not ignite flammable materials nearby. The specific requirements can vary based on regulations and the type of equipment being used, so it's essential to consult relevant safety guidelines or standards for precise specifications.