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What do CM and plenum-rated cables mean?

informationalConsumer Electronics & DevicesAnalyzed 07/05/2025

AI Search Visibility Analysis

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Query Report Analysis Visualization
High Impact

Total Mentions

Total number of times a brand appears

across all AI platforms for this query

Reach

Platform Presence

Number of AI platforms where the brand

was mentioned for this query

Authority

Linkbacks

Number of times brand website was

linked in AI responses

Reputation

Sentiment

Overall emotional tone when brand is

mentioned (Positive/Neutral/Negative)

Brand Performance Across AI Platforms

3
Platforms Covered
0
Brands Found
0
Total Mentions
No Brands Found
No brands were mentioned in the AI platform responses for this query.
Referenced Domains Analysis
All 19 domains referenced across AI platforms for this query
ChatGPT
Perplexity
Google AIO
ChatGPT:
0
Perplexity:
1
Google AIO:
3
4
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Perplexity:
1
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1
2
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Google AIO:
2
2
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0
Perplexity:
1
Google AIO:
1
2
ChatGPT:
0
Perplexity:
1
Google AIO:
1
2
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0
Perplexity:
0
Google AIO:
2
2
ChatGPT:
0
Perplexity:
1
Google AIO:
1
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0
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Google AIO:
1
1
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0
Google AIO:
1
1
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Perplexity:
0
Google AIO:
1
1
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Perplexity:
0
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1
1
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1
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1
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1
1
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Perplexity:
0
Google AIO:
1
1
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1
Perplexity:
0
Google AIO:
0
1
ChatGPT:
1
Perplexity:
0
Google AIO:
0
1
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Google AIO:
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1

Strategic Insights & Recommendations

Dominant Brand

No specific brands were prominently recommended across the platforms, with focus on cable standards rather than manufacturers.

Platform Gap

All platforms provided consistent technical explanations, with Perplexity offering the most structured comparison table format.

Link Opportunity

Technical cable manufacturers and fire safety compliance resources could benefit from detailed guides on cable rating selection.

Key Takeaways for This Query

CM cables are standard communications cables suitable for general building use with basic fire resistance

Plenum-rated (CMP) cables are required in air circulation spaces like drop ceilings and HVAC ducts

Plenum cables offer superior fire resistance and emit less smoke and toxic fumes than CM cables

Cable selection must comply with building codes and fire safety regulations based on installation environment

AI Search Engine Responses

Compare how different AI search engines respond to this query

ChatGPT

2224 Characters

SUMMARY

CM (Communications Multipurpose) cables are standard communications cables for general building use, suitable for walls and floors with minimal fire code restrictions. Plenum-rated (CMP) cables are engineered for plenum spaces like drop ceilings and HVAC areas, featuring fire-resistant jackets that emit minimal smoke and toxic fumes. Key differences include fire resistance levels, usage environments, and cost, with plenum cables being more expensive but required for air-handling spaces to comply with safety regulations.

Perplexity

3390 Characters

SUMMARY

CM and plenum-rated cables refer to NEC fire safety standards for communication cables. CM (Communications Multipurpose) cables are basic-rated for general use with least fire resistance. CMP (Communications Multipurpose Plenum) cables have the highest fire and smoke resistance, designed for plenum spaces where air circulation can spread fire and smoke. Plenum spaces include areas above drop ceilings and below raised floors used for HVAC return air, requiring the strictest fire safety compliance.

Google AIO

2439 Characters

SUMMARY

CM cables are general-purpose communications cables for non-plenum spaces with basic fire-retardant properties. Plenum-rated (CMP) cables are designed for air circulation spaces like dropped ceilings and raised floors, offering higher fire resistance and low smoke/toxic fume emission. The main differences are fire resistance levels, smoke characteristics, and cost, with plenum cables being more expensive but essential for maintaining air quality and safety in HVAC circulation areas.

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CM vs Plenum-Rated Cables: Fire Safety Standards Explained | Geneo