Power Cords/

Extension Cords

Extension cords, also known as power extenders or extension leads, are longer power cords that are used to supply electrical energy to portable electrical equipment or appliances located up to hundreds of feet away from a main power source. Equipment such as construction machinery, sound and lighting equipment, emergency medical defibrillators and electrical power tools are often used in locations without a convenient power source, and extension cords are thus used to supply the current to the equipment.

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Interpower Corporation
Oskaloosa, IA
800-662-2290
Designing for export? We make it easy! Interpower Corporation has a variety of international and North American extension cords in stock, and just a 1-week manufacturing lead time on nonstock items. Interpower Corporation offers value-added options including: custom lengths, labeling, and packaging, a variety of colors, and more. 100% of our products are tested. No minimum order requirements!
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Kord King
Lancaster, PA
800-818-4916
Kord King specializes in providing each of their customers with superior extension cords. They make sure every product is able to meet the toughest deadlines and quality standards. As a manufacturer leader and offering the highest level of customer service, our flexibility is in tackling even the most difficult projects. Our products are U.L. and C.S.A. approved.
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Quail Electronics, Inc.
Livermore, CA
800-669-8090
Our customers find we have the highest standards when it comes to quality, and delivery. Quail Electronics is a worldwide power cord supplier, offering extension cords and various other products. Our products are used worldwide across every industry there is. Offering same day shipping, competitive pricing, low $50 minimum and a large array of products in stock, contact Quail.
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Signal and Power Delivery Systems, Inc.
Campbell, CA
408-871-7928
A power cord manufacturer, with over two million monthly productions of extension cords, is Signal and Power Delivery Systems. They provide in-house wire extrusion and connector production assures the best price, quality and unmatched lead times. They offer OEM custom designs and over 200 styles of stocked products, for ANY country with unbeatable prices.
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United Universal Industries, Inc.
Joliet, IL
800-683-7228
United Universal Industries is a leading supplier and manufacturer of various extension cords, wiring harnesses and special molded products for a wide range of industries and markets. All products are 100% compliant. Family owned and operated, United Universal Industry has been providing their loyal customers with personal service and quality products for over thirty years.
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Extension Cords

There are many different types of extension cords, ranging in capacity from light household to heavy-duty industrial and they are constructed by encasing conducting wire, usually copper, of differing gauges in a rubber protective jacket. The wires are responsible for conducting electrical voltage from a wall socket to the electrical appliance. One end of the extension cord will hold an electrical plug, otherwise known as male. The prongs on the electrical plug fit into the corresponding holes in the wall socket, or electrical receptacle, thus providing a connection to allow the flow of electrical energy from the power source, through the extension cord and to the appliance. The optimum flow of energy through the extension cord depends on a tight fit between the socket and the plug.

Cord length, wire gauge and cord operating distance are all important factors to consider when choosing extension cords. The capability of a power supply cord to successfully handle the required flow of electrical energy will depend on these factors and the quality of electricity transmitted will be affected accordingly. The National Electrical Manufacturers Association (NEMA) is responsible for setting the standards used in North America for electrical supply components, and this ensures a high quality of electrical supply is maintained. As with any component used in the transportation of electrical energy, there are important safety precautions to be considered. Personal injury, death and/or extensive property damage could occur as a result of the deterioration or misuse of electrical power supply equipment, including extension cords. Extension cords are only designed for temporary usage, and not as a means of permanent or long-term power supply. Polarized sockets and plugs are used in an attempt to minimize some of the potential dangers of using extension cords by implementing a connection to a ground wire. Circuit breakers and fuses can also be used in extension cords, serving to cut off electrical energy flow in the case of a power surge or overheating.

Extension Cords
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