Hello,
When designing a power cord or cord set, usually the length is determined by the product designer. So it is important to be able to communicate correctly the length that is desired—whether it is a standard length item or a special order. When measuring all power cords and cord sets, Interpower uses specific methods of measurement.
Measuring a Power Cord
Interpower measures a power cord from the face of the connector or plug, not including the pins, to the end of the cable. Interpower uses this method for all power cords.
Measuring a Cord Set
Interpower measures a cord set from the face of the connector to the face of the plug, not including the pins. Interpower uses this method for all cord sets.
When using a hooded male plug, the measurement starts from the edge of the hood to the face of the connector.
Standard and Specialized Lengths
Interpower offers standard length power cords and cord sets, as well as specialized lengths. When manufacturing power cords and cord sets, Interpower follows North American and international standards, along with minimum and maximum lengths per country regulations and/or standards. There are application limits that may apply. For example, cords over 50 feet in the United States and Canada will have the amperage rating derated. For international applications, the derating depends on the application and the cable used in the assembly.
The standard tolerances for overall length of cord that Interpower follows include:
| Length |
Standard Tolerance |
| 0–2.99 ft. (0–913mm) |
+/- 1 in. (25mm) |
| 3–5.99 ft. (914–1827mm) |
+/- 2 in. (51mm) |
| 6–11.99 ft. (1828–3656mm) |
+/- 3 in. (76mm) |
| 12–19.99 ft. (3657–6095mm) |
+/- 4 in. (102mm) |
| 20 ft. or longer (6096+mm) |
+/- 6 in. (152mm) |
Additional Resources
For more information on power cords and cord sets, see the Featured Product page. For information on the cord set configurations allowed, see the International Cord Set Configurations chart and the North American Cord Set Configurations chart. To assist in determining cord specifications per a specific country or region, see North American Power Cords and Cord Sets and International Power Cords and Cord Sets. To identify which plug patterns are used in specific countries, see the Guide to Worldwide Plug/Socket Patterns & Power Mains (Single-Phase).
Interpower offers a 1-week U.S. manufacturing lead-time on non-stock Interpower products, same day shipping on in-stock products, and no minimum order or dollar requirements. Blanket and scheduled orders along with value-added services are available. If you have questions, Interpower offers free technical support. You can check the website at www.interpower.com, e-mail sales@interpower.com (United States) or uk@interpower.com (United Kingdom) or contact Customer Service in the United States at (800) 662-2290 or in the United Kingdom at +44 (0)1908 295300.
