Cerrowire Calculators vs Kopperfield

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.

Save time and money. Get ready for permits and projects with faster and easier design tools from Kopperfield, including load calcs, line diagrams, panel schedules, and more. Once logged into your Kopperfield account, you'll enjoy our: * Load calculator: Easy-to-use interface pre-loaded with common appliances and their standard output values from the National Electrical Code. Add information on the property and your calculation will automatically update. Supports both commercial and residential calculations, as well as the Standard (NEC Article 220 Part III), Optional (NEC Article 220 Part IV), and 2026 Standard (NEC Article 120 Part III) methods. * Single line diagram tool: Contains dozens of common templates and electrical symbols to make it easy to generate new diagrams and share them with your team. View diagrams from any device and create new templates on tablet or desktop for your whole team to use. * Panel schedules: Includes tools to complete panel schedules and create labels for electrical panels. Drag-and-drop interface makes it easy to arrange and customize circuits for both split-phase and three-phase projects. * NEC chatbot: Custom chatbot with advanced search capabilities to quickly reference specific sections of the 2017, 2020, or 2023 National Electrical Code. Includes the following features: * Fast PDF outputs: instantly generate a downloadable, one-page PDF report of your load calc, line diagram, or panel schedule to share with inspectors and customers * Smart property data: enter the property address and we’ll pull in the square footage for any customer project or electrical load calculation * AI panel photo processing: upload a photo of an electrical panel to automatically add items to your load calculation or panel schedule * Team dashboard: store your team's projects and documents in one place for easier management, access, and review *Single and three phase options: use a variety of nominal voltages for residential and commercial building types, including: 120/240V, 120/208V, 120/240V, 208Y/120V 3Ø, 240V 3Ø Delta, 240V 3Ø Hi-leg Delta, 347V 3Ø Delta, 480Y/277V 3Ø, 480V 3Ø Delta, 600Y/347Y 3Ø, 600V 3Ø Delta. * Standard scenarios: generate load calcs for scenarios including single family homes (standard and optional methods), multi dwelling units (i.e., duplex, triplex, quad), 120/208v (three-phase power) dwellings, accessory dwelling units and additions, commercial occupancy types, and heat pumps * Common appliance defaults: choose from a pre-loaded list of common appliances and standard output values that you can adjust for every load calculation * EV charger inputs: include EV charger values to any load calculation, essential for modern homes