Publications

Electrical: General

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A6091: Ambient Temperature Ampacity Corrections for Cable Bundling and Direct Solar Exposure: [727.17 Kb]
Heat is one of the enemies of electrical systems. This study discusses the effects of ambient temperature and electrical loading on bundled cable and of direct sunlight on conductors in conduits. The results carry great import in determining ampacity corrections required to meet the National Electrical Code®. When de-rating tables are not applied in practice, serious consequences can result. Reprint, IAEI News, September 2003
(12 pgs.) 1 free (add’l $0.25 ea)
A6119: Bigger Really Is Better: [255 Kb]
“Inspectors and Contractors Prefer Larger Gages and More Circuits” A recent survey of electrical inspectors, contractors and instructors indicated an overwhelming preference for more circuits, larger gages than Code minimums, and copper conductors in their own homes.
(2 pgs.) 1 free (add’l $0.25 ea)
A6015: Building Wire: Copper vs. Aluminum: Survey results from 713 electrical contractors on their preferences for copper or aluminum in building wire applications. Contains tabular data and quotes from respondents.
(6 pgs.) 1 free (add’l $0.25 ea)
A6107: Corrosion and Current Burst Testing of Copper and Aluminum Power Connectors for Use with Copper and Aluminum Conductor: [2 Mb]
Crimped and mechanically bolted aluminum and copper connectors are commonly used for terminating electric power cables. In this study, copper-to-copper, aluminum-to-copper, and aluminum-to-aluminum connections were subjected to accelerated aging. The all-copper connections performed best. This is the full report.
(23 pp.) 1 free (add’l $0.25 ea)
A6108: Comparative Corrosion and Current Burst Testing of Copper and Aluminum Electrical Power Connectors: [1.4 Mb]
This IEEE Paper, presented at the 2005 Industry Applications Conference, reports on testing of aluminum and copper power connectors. The performance of copper and aluminum connectors was compared by conducting accelerated aging tests. The connectors were evaluated by comparing the change in resistance of the test samples as the test progressed. The results of these tests point to a high level of failure of the aluminum connectors.
(23 pgs.) 1 free (add’l $0.25 ea)
A6116: Derating: Outdoor Temperatures for Various U.S. Cities and Temperatures Inside Conduits on Rooftops Exposed to Direct Sunlight: [48 Kb]
A pocket-sized list of over 700 U.S. locations, their calculated average 2% design temperatures from ASHRAE data, the temperatures inside rooftop conduits at various heights above the roof, and the maximum temperature recorded for that locale.
(16 pgs.) 1 free (add’l $0.25 ea)
A6115: Rooftop Ampacity Adjustments: A pocket-sized slide tool designed to allow easy calculation of adjusted ampacities for conductors in conduits on rooftops exposed to direct sunlight, as required in the 2008 NEC. Contains temperature data for several dozen cities. A complement to booklet A6116.
1 free (add’l $0.25 ea)
A6059: Do You Need An Electrician?: A questionnaire encouraging consumers to self-inspect their homes for telltale signs of electrical problems. Contains ten questions with explanations. Also contains a list of questions to ask an electrician or electrical contractor in order to assess their qualifications.
1 free (add’l $0.25 ea). Available free to installers in bulk quantities by calling 212-251-7200.

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