Okay, let's break this down and see if this Progress light fixture installation is acceptable given the conditions

Factors to Consider:

1. Wind Load

150 mph is a very high wind zone. This means the fixture will be subjected to significant force.2.

Fixture Mounting and Exposure



Mounting Block

An 8x8 inch block is smaller than the light fixture's base. The 6-inch overhang on one side represents a significant stress point.

Exposure

The fact that 6 inches of the base is not in contact with the block or siding is concerning. This creates a lever arm for wind force to act upon.

No Overhang

Being fully exposed to the elements intensifies the wind and weather impact.3.

Fixture Specifications



Height

18 inches tall adds to the wind's leverage.

Construction

We don't know the material of the fixture (aluminum, steel, plastic), which affects its strength.4.

Building Codes and Manufacturer's Instructions

The most important considerations.

Why This is Potentially Problematic



Insufficient Support

The small mounting block and the overhang create a weak point. The wind will exert significant force on the fixture, and the overhang will act as a lever, trying to pull the fixture away from the wall.

Material Stress

The materials of the fixture, the mounting block, and the siding will be stressed beyond their designed limits, particularly during high winds.

Potential for Failure

The fixture could break, detach from the wall, or damage the siding. This creates a safety hazard and potential property damage.

Code Violation

It's highly likely this installation violates local building codes, especially in a high wind zone. These codes are in place to ensure structural integrity and safety.

To Determine Acceptability, You Must Do the Following


Consult the Manufacturer's Instructions

This is the most critical step. The Progress light fixture should have installation instructions that specify the proper mounting methods, including: Acceptable mounting surfaces (e.g., directly to siding, requiring a specific type/size of mounting block). Fastener types and sizes (e.g., stainless steel screws, lag bolts). Torque specifications for tightening fasteners. Wind load rating or recommendations. If the instructions are not followed it is not acceptable!!2.

Check Local Building Codes

Contact your local building department. They will have specific requirements for exterior lighting installations, including wind load considerations. The codes will address: Acceptable mounting methods. Fastener requirements. Wind resistance standards.3.

Inspect the Fixture

Note the material of the fixture and look for a wind rating if possible.

In summary, the described installation is likely not acceptable due to the high wind zone, the small mounting block, the significant overhang, and the lack of an overhang. Without following the manufacturer's instructions and adhering to local building codes, this installation is unsafe and could lead to failure.Recommendations



Replace the Mounting Block

Use a larger mounting block that completely supports the base of the fixture. It should be made of weather-resistant material.

Use Appropriate Fasteners

Use stainless steel fasteners of the correct type and size to securely attach the fixture to the mounting block and the mounting block to the siding. The fastener choice should be dictated by the siding type and per code.

Seal Gaps

Seal any gaps between the fixture, the mounting block, and the siding with weatherproof caulk to prevent water infiltration.

Consult a Qualified Electrician

A licensed electrician can ensure the installation meets code requirements and is done safely.

Important Disclaimer: I am an AI chatbot and cannot provide professional engineering or electrical advice. This information is for general guidance only. You must consult with qualified professionals to ensure the installation meets all applicable codes and safety standards. Flag for review