The area between 5' and 10' from the vent of two outside above ground fuel storage tanks is classified as ____.

The correct classification for the area between 5' and 10' from the vent of two outside above ground fuel storage tanks is Class I Division II. This classification pertains to hazardous locations where flammable gases or vapors are present under abnormal conditions, but are not expected to be present during normal operations.

In this specific scenario, the area between the specified distances from the vent of fuel storage tanks is where vapors may escape during a release or venting but will not accumulate under normal conditions. Class I Division II implies that while ignitable concentrations of flammable gases may exist in unusual situations, they would not be found in the specified area during normal operations, thus justifying the classification.

Understanding this distinction is crucial for implementing the necessary safety measures and regulations required in such environments. This ensures proper hazardous area classification and helps in designing appropriate electrical installations and equipment that adhere to safety standards.