Electric Service Calculator

The Electric Service Calculator (Calculator) is a convenient tool to determine the minimum electrical load demand for one-family dwellings based on the Standard Calculation Method as defined by Article 220 of the 2011 National Electrical Code (NEC®). Electricians from other countries are welcome to use the Calculator as well. It is your responsibility to insure that your community implements the NEC for the United States.

The Calculator determines grounded and ungrounded loads for general lighting, fastened (or fixed) appliances, dryers, cooking appliances, heating and A/C units, and the largest motor. All numeric entries are in Volt-Amperes (VA). The calculated loads are compiled to determine the total service load for a single-family dwelling.

After the service load is calculated the Calculator determines the size of the service-entrance conductors required for the dwelling. Proper sizing of the conductors is required to ensure the safety and efficiency of the service.

The Calculator is designed to be an aid to electricians in electrical load calculations and is not intended to replace Article 220 of the NEC® or the NEC® as a whole.

National Electrical Code and NEC are registered trademarks of the National Fire Protection Association, Inc.

On our support forum located at http://bendele.net/forum/ you can:

- ask questions about how the Calculator calculates.
- offer suggestions for improving the application.
- report defects (bugs).
- request new features.

Thank you very much for using the Electric Service Calculator . We hope that it saves you time and money.