Path-Q Solar
How can I determine whether hail damage requires an electrical inspection even when there are no visible cracks?
Answer
Visible cracks are not required for hail to justify an electrical inspection. Arrange one when hail was severe or close, production changed afterward, there are impact marks, loose or damaged components, inverter alarms, or uncertainty about connectors, wiring, or insulation.
Key points
- Impact can cause hidden cell, junction-box, connector, cable, or insulation damage.
- Compare production before and after the event, while accounting for weather and normal seasonal variation.
- Do not rely on visual inspection from the ground to clear an array electrically.
What it depends on
- Hail size, intensity, and exposure duration
- Array age, module construction, and mounting condition
- Production and alarm history before and after the storm
- Whether wiring or roof components show impact or water damage
Risks and trade-offs
- Climbing onto the roof or handling damaged equipment can create fall and electrical hazards.
- Waiting for visible failure may allow latent damage to worsen or complicate documentation of the event.
Information you may need
- Storm date and hail observations
- Before-and-after production data
- Photos of modules, rails, wiring, and roof surfaces
- Any inverter alarms, tripped protection, or insurance documentation requirements
Your next step
What to do next
Contact a qualified solar electrician or service provider for a post-hail inspection and ask what testing and documentation are appropriate for the equipment.
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