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Cerrowire Calculators

by Cerro Wire LLC more by this developer →

#358,405 of 719,896 by ratings on Apple · #28,554 of 60,382 in Utilities

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Category: Utilities

Description

Looking for a quick and easy way to size conduit per the NEC? Cerro Wire LLC (Cerrowire) created this app to help you figure out what size conduit to use for copper and aluminum building wire. Two calculators allow you to determine what is the maximum number of conductors that will fit in a type and size of raceway, or what size raceway is required for the type(s) and size(s) of conductors in your circuit. All results are based on the National Electrical Code®. The app can be used to calculate raceway size or fill for EMT, PVC, RMC, etc., with insulated and bare copper and/or aluminum conductors. (Stay tuned for more calculators that will be added in the near future!)

Cerrowire is headquartered in Hartselle, Alabama. Cerrowire is a copper wire manufacturing company with plants in Alabama, Georgia, Indiana, and Utah. We supply building wire and cable throughout North America for commercial, industrial and residential use. Our products are available through electrical distributors, wholesalers, and retailers. Cerrowire – a Marmon/Berkshire Hathaway company – follows the time-tested business model of our parent company to continually improve both our process and our products in order to offer advantages that meet the needs of customers. The end results for our customers are products, packaging, services, and tools that anticipate and fill the ever-evolving needs of the competitive construction industry.

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Growth

Change in ratings, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.

History

Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.