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Why is my string inverter showing a low insulation resistance error code on rainy days, and what is the standard Megger testing procedure to locate micro-cracks in the panel glass?

ChatGPTgpt-62 queries11/1/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
Why is my string inverter showing a low insulation resistance error code on rainy days, and what is the standard Megger testing procedure to locate micro-cracks in the panel glass?
2 real searches · 1 real-search pass
IEC 62446-1 photovoltaic insulation resistance test procedure test voltage table official guidanceGoogle ↗
OBSERVED
NREL photovoltaic module microcracks electroluminescence imaging glass cracks inspectionGoogle ↗
OBSERVED

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

Classifying 2 queries…

Searches and sources

ChatGPT2 real searches · gpt-6
IEC 62446-1 photovoltaic insulation resistance test procedure test voltage table official guidance Google ↗
NREL photovoltaic module microcracks electroluminescence imaging glass cracks inspection Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
IEC 62446-1 photovoltaic insulation resistance test procedure test voltage table official guidance
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
NREL photovoltaic module microcracks electroluminescence imaging glass cracks inspection
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1