Choosing a Power Cord or Cord Set

Choosing a power cord or a cord set is typically a four-step process:

Identify the Correct Country-Specific Plug

Determining the correct plug is essential. Interpower offers a Guide to Worldwide Plug and Socket Patterns and Power Mains (Single-Phase) which shows specified plug patterns by country. “When deciding on the correct plug pattern,” said Interpower Product Development Manager Ron Barnett, “be mindful that while some plugs may look similar, they may not be correct or safe for the product. Plugs used in Argentina, Australia, and China have similarities in appearance, but cannot be used interchangeably within those countries.”

Determine the Rating of a Power Cord or Cord Set

It is crucial to know the amperage and voltage ratings required for the product being exported. “Higher or lower amperage can mean a different plug pattern, even in the same country,” Barnett said. “Amperage requirements also affect cable size. North America has a different voltage, amperage, and frequency compared to many other countries.” The Guide to Worldwide Plug and Socket Patterns and Power Mains (Single-Phase) provides information on voltage and frequency requirements.

Choose the Correct Cable

North American cable is different from international cable which is different from Japanese or Chinese cable. “North American cable cannot be used in countries where international cable standards are in place and vice versa,” Barnett said. “For example, removing a North American plug from a cord set made with North American cable and replacing it with a Continental European plug will not make the cord set acceptable for Europe.”

Choose the Correct Connector for a Cord Set

If exporting globally, consider incorporating IEC 60320 components into the product design. “An advantage of using an IEC 60320 component is that it can assist in making the product globally accessible,” Barnett said. “For example, an IEC 60320 connector can be attached to a detachable cord set with a country-specific plug. The connector will provide the power to the equipment by connecting with an IEC 60320 inlet in the equipment. The use of IEC 60320 components designed into a product allows the same equipment to be used in a variety of markets.”

One important note regarding the rating on the power cord or cord set: A cord is rated by its least powerful component. For example, a cord set with a 15A plug on 13A cable with a 10A connector will have an overall rating of 10A.