Ambient Temperature | JADE Learning

The 2023 National Electrical Code (NEC) | 5 Big Changes Coming Soon!

Here are five of the most radical changes found between the covers of the 2023 National Electrical Code (NEC)!

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Face as the Key: Understanding Facial Authentication

This article discusses facial authentication technology, its legal concerns, and its future.

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The 2023 National Electric Code Has Arrived!

The 2023 National Electrical Code (NEC) is here! This article covers NEC history, the update process, and a chapter breakdown! Stay tuned in the months ahead for more updates.

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From Here to There – Insights on Alarm Monitoring Communications

This article discusses the pros and cons of every major alarm monitoring system – and what to expect in the future.

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Robots, the Cloud, and Perimeter Hardening – Reflections on GSX 2022

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Conductor Derating on a Rooftop Made Easy

Derating conductors for the environment where they are installed is an important consideration for selecting the type and size of conductor for a particular installation. When installing a system on a rooftop, special consideration must be given to the ambient temperature inside the wire way or conduit that contain the conductors to prevent heating beyond the rating of the insulation of the conductors.

Conductors installed in raceways on rooftops can be subject to higher temperatures than they would be just from the heating effect of solar energy absorbed by the wall of the raceway. This effect becomes more evident when the proximity is very close to the roof or the raceway is in contact with the roof surface.

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Conduit and Cables Exposed to Sunlight on Rooftops

Anyone who has been on top of a roof on a hot summer day knows what it’s like to stand in the middle of an oven. Extreme temperatures from the sun can bake everything in sight, from shingles to appliances, and even electrical conductors and conduit.
Conductor insulation is meant to provide long lasting protection from expected heat due to the flow of electricity and normal environmental factors. However, excessive heat from solar radiation can damage conductors and cause premature failures.

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The 2023 National Electrical Code (NEC) | 5 Big Changes Coming Soon!

Most Recent

Face as the Key: Understanding Facial Authentication

The 2023 National Electric Code Has Arrived!

From Here to There – Insights on Alarm Monitoring Communications

Robots, the Cloud, and Perimeter Hardening – Reflections on GSX 2022

Recently in

Conductor Derating on a Rooftop Made Easy

Conduit and Cables Exposed to Sunlight on Rooftops

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