AC Power Cord
An AC power cord is a detachable way of providing an alternating current of electric energy from a mains power supply to an electrical appliance or equipment. Serving industries like...
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This Article takes an In-depth look at Power Cords
This article includes everything you need to know about power cords and their use.
You will learn:
A power cord is a line cord or electrical cable that connects various devices to an electrical power supply to provide electrical current. Made of copper wire enclosed in an insulating material and covered with protective non-conductive material, power cords have internationally country specific plugs to provide electrical power in a variety of conditions and locations. The categories of power cords are divided into plain power cords with a plug on one end and conductor wires on the other end or connector power cords with a connector on one end and conductor wires on the other end.
The National Electrical Manufacturers Association (NEMA) has established the standards and requirements for the manufacture of electrical plugs, cord voltage capacity, and receptacle configuration. There are 15 different styles or types of electrical plugs in the world that are listed from Type A to Type O. Electrical suppliers provide adapters to conform with the requirements of every type of electrical plug on earth. Types A and B are used in the United States
Every power cord is composed of a plug, socket, and cord. Critical power cords may have a locking mechanism to prevent accidental disconnection, which is necessary for medical equipment and high powered machinery.
Power cords are rated by voltage or kilovolts, which determines the amount of power they can transfer. The rating factors for power cords are wires, plugs, and connector. The lowest rated of the three determines the rating of the set. A key part of the rating is the plug, which indicates the country where the set is used and where it is made.
The load capacity of a power cord is determined by the gauge of its wires and its length. The thickness or diameter of the wire affects the amount of current it can carry and whether it will heat up. The length of the cord determines voltage drop, which is the amount of voltage that is lost from the connector to the end of the cord.
The gauge rating is a simple number determined by the American Wire Gauge (AWG) standard numbering system. A 12 AWG is a 120 volt cord with 12 gauge wire to be used with 120 volt outlets. In the AWG system, the lower the number the thicker the wire.
As the length of a power cord increases, its voltage drop increases. The lower capacity is due to the power that is lost from the connector to the end of the cable. Shorter cables maintain the same power level from the outlet to the end of the cord. Very long power cords, over 50 feet, have a very high AWG because of the length of the cord, which increases resistance that leads to extreme voltage drop.
Thomas Edison developed the power distribution system in 1882. He wrapped a copper rod in jute, a soft shiny fiber from plants, as an insulator. The jute wrapped copper rod was placed in a pipe with a bituminous compound. The fabricated device was part of his introduction of electricity to the city of New York.
Though vulcanized rubber was developed in 1844, it was not applied to electrical wiring until 1880. Cords covered in rubber remained the standard until the1930s when metal sheathed cable called armored cable became popular. It was expensive and lasted until the 1950s when two wire PVC insulated cable was introduced.
Today, PVC covered cords are the most common since they can withstand high temperatures and rugged usage. It has been found to be an efficient and durable means for producing power cords.
The examination of the different types of power cords takes a distinctly different direction than the discussions of other types of equipment or systems. In the case of most industrial and residential items, the types of each item can be identified in one country. This typical method of identifying types does not apply to power cords, which vary in accordance with the country where they originated.
Any person who travels internationally with a laptop, cell phone, or iPad has an awareness of the differences in the types of power cords since every country on earth has a different set of parameters regarding their types of plugs and power supplies. There are 14 different plug types that are used in the world. The standards for the different types were established by International Standards (IEC), the National Electrical Manufacturers Association (NEMA), and the International Commission on Rules for the Approval of Electrical Equipment (CEE). Each group identifies different male and female power cord connectors.
AC power cords supply alternating current from a power source to electrical equipment or appliances. They are used with applications like electrical power tools, lighting, household appliances, musical instruments, shop equipment, and for personal uses.
The structure of AC connecting cords include a cable assembly with wires, wire sheathing of polymer or rubber, insulation, and plugs that include prongs, casing, and wire terminals and have different voltage ratings.
Manufacturers of AC power cords have exacting specifications for their construction that include voltage rating, current rating, wire shape and size, length, sheathing material, types of plugs, and connectors. The connector attaches to the appliance or electrical equipment while the plug connects to the electrical receptacle or power supply.
Since countries use different voltages and frequencies in their AC power, cords must fit those standards to perform correctly. AC plug types go from A through O and break down into further categories with slight variations.
Modern AC cords are grounded, or polarized, as a safety measure since higher voltage appliances and electrical equipment have the risk of shock. Polarization ensures the equipment is connected to a neutral grounded side of the circuit reducing the risk of potential shock. All sensitive electrical equipment use polarized or grounded power cords.
NEMA power cords are the standard for North American electrical plugs, cord voltage capacities, and electrical receptacle configurations. The most common NEMA plugs used to be Type A with two conducting blades or prongs. Type A plugs have been replaced by Type B, which has an additional third grounding rod. The international configuration of plugs varies extensively with many countries using some form of type A plugs.
Devices approved by NEMA are typically engineered to be one wire or two wire devices depending on whether or not a device is polarized or grounded. Different considerations to keep in mind when purchasing electrical components include the intended use of the power cord, plug or connectors, the intended energy load and the required transfer a device may need. NEMA standards are exclusive to North America and do not apply to other countries. When traveling outside of North America, it is important to have an adapter for the country to be visited.
There are two general classifications for NEMA power cord connectors, which are straight blade and locking. The straight blade version of connectors are found in consumer products with the metal conductive blades referred to as prongs. The prongs or blades of a straight blade connector are folded or flat pieces of metal with the ground pin being a round straight pin.
The use of locking connectors is found in highly critical industrial operations where disconnection can endanger workers or processes. The blades of locking NEMA connectors are curved and come in sets of three. When the connector is plugged into the power source, it is twisted to be locked tightly in place.
NEMA non-locking and straight connectors are further divided into 25 subtypes while locking connectors are divided into 24 subtypes with each group of subtypes having different specification codes for more precise identification of the connector.
NEMA products range from 15 to 60 amperes and 125 to 600 volts. They are differentiated by their classifications. All NEMA 1 power cords have a two-prong design, while NEMA 5 power cords have a three-prong configuration. NEMA 5 devices are three-wire grounding devices that are rated for a maximum voltage of 125. The 5 15 rating, specifically, is a grounded version of a NEMA 1 15 device. Devices that are classified as NEMA 6 and up are typically used to direct power to large machines or household appliances.
While all NEMA 5 15P power cords have three prongs, some are designed with different ends. For cords that are used behind furniture, the head of the cord turns sideways so that it can be flush with the wall. Others have a traditional head that goes straight into the wall. Some NEMA power cords have multiple outlets so that one power source can be extended and used to power several devices at the same time.
Generator power cords are available in a wide range of styles that include 15 amp ratings to 30 amp ones along with a series of different connectors. The most common types of generator power cords are 5, L5, L14, 14, TT and CS, which are related to the receptacle labels where L14-30P means that it is a twist lock, 30 amp plug. There are several options when looking for a generator power cord with different connectors from generator power cord manufacturers, who can produce custom power cords in order to ensure the exact wire sizes and minimize voltage losses for a desired wire length.
When selecting a generator power cord, it is important to understand that generators are measured in watts, while generator power cords are measured in amps. Generator power cords with higher amps are able to handle more electricity. In addition, higher amp generator power cords are thicker, which enables them to handle more wattage. Most generators have several receptacles with each receptacle being able to handle different amps.
As with other forms of power cords, the plugs for generator power cords vary with 3-prong plugs capable of carrying 120 volts while 4-prong plugs can carry 120 to 240 volts. Since most homes have 240 receptacles, 4-prong generator power cord plugs have become the most popular. Thick generator cords are recommended since long or thin generator cords can drain power that is provided by a generator. The use of generator power cords should have a higher wattage rating than that which is required by an electrical device.
Generator Power Cords Based on Power Requirements | ||||||
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Device Requirements | Wire Gauge by Length (ft.) | |||||
AMPS | Watts (120/240V) | 10 | 25 | 50 | 100 | 150 |
5 | 600/1200 | 18 | 16 | 14 | 14 | 14 |
10 | 1200/2400 | 16 | 16 | 14 | 14 | 12 |
15 | 1800/3600 | 14 | 14 | 12 | 12 | 10 |
20 | 2400/4800 | 14 | 12 | 12 | 12 | 10 |
25 | 3000/6000 | 12 | 12 | 10 | 10 | 8 |
30 | 3600/7200 | 12 | 10 | 10 | 10 | 8 |
40 | 4800/9600 | 10 | 8 | 8 | NR | NR |
50 | 6000/12000 | 8 | 6 | 6 | NR | NR |
*NR = Not Recommended |
A power supply cord, or electric cord, serves as a connector between an electrically powered piece of equipment and an electric power source. Power supply cords are used to power lighting and sound equipment, power tools, and household appliances. They consist of copper wire protected and insulated by rubber or some form of polymer and can be detachable or permanently connected.
Depending on the application, power supply cords can be flat or rounded and available in coiled or a retractable form for convenience. As with all forms of power cords, power supply cords are available in various lengths to make connection and storage easy. In the majority of cases, power supply cords tend to be short and close to the device for which they provide power.
The current or amperage rating for a power supply cord depends on the device that it powers. The amperage rating of a power supply cord is the maximum current that the cord can carry and should be carefully followed for optimum performance. Gauges for power supply cords vary between 18 up to 10 with 14 being the most common. As with all forms of power cords, the voltage rating for power supply cords vary in accordance with the country where they are used with the standard voltage for the United States being 110V or 120V while European countries have standard voltages of 220V to 240V. Other nations have standard voltages of 100V to 127V.
Cord sets conduct electricity and involve a conductor, such as copper wire, insulation material, and a protective covering. Other components include electrical fuses to prevent surges in voltage, a current leak detection component, and a method for monitoring voltage. With sensitive equipment, protective material is included to minimize the effects of electromagnetic interference (EMI).
The structure of cord sets consists of a molded plug and a country appropriate molded connector. Cord sets are designed to connect directly to the power supply and provide power to an appliance, application, or process. An essential aspect of cord sets is ensuring that they have the proper plug pattern for where they are used. As with all forms of power cords, the amperage and voltage rating should match the requirements of the equipment to be powered.
Cord sets are used wherever electrical equipment and appliances are including retail, commercial, industrial, and residential locations and normally use AC power. Extension cords are longer cord sets that provide electricity up to hundreds of feet away from a main power source.
The National Electrical Manufacturers Association (NEMA) sets the manufacturing and product quality standards for North American cord sets, electrical plugs, cord voltage capabilities, and receptacle configurations to ensure the safety of operators. International standards apply to the different types of electrical cord components found in other countries, which use different voltages and plug configurations.
A key factor for cord sets is their length, which can vary in accordance with where and how they are used. There are a set of standards that need to be followed when measuring a cord set to ensure the proper length is being used for an application.
When choosing custom power cords, it is important to know the limitations and challenges of an application before consulting a custom power cord manufacturer. Custom power cords are designed for a specific application and process. They are minutely engineered to fit a set of predetermined conditions and may not adhere to NEMA standards due to their unique design. Typically, custom power cords include the heaviest wire and grounding pin. Wet applications require custom power cords with a sealed plug to prevent moisture from getting into the receptacle.
The color of custom power cords are a safety measure that is used to indicate certain types of cords. Brightly colored cords reduce hazards and make it easy to identify the location of a power cord. Some custom power cord designs include surge protectors to protect tools or machines.
Custom power cords provide customers with a wide range of options for producing power cords with the exact length, amperage, strength, durability, and number of outlets. Manufacturers work closely with their customers to precisely match the design requirements for a custom power cord. The key factor in the process is the use of a custom power cord such that the final product perfectly matches the needs of a customer.
Any piece of electrical equipment that requires connection to a power source, such as machinery, domestic appliances, and computers, has an electric cord, which can be flexible or semi-rigid. For the cord to transfer electrical energy successfully and safely between the power source and the appliance, the connection between the plug and the receptacle of an electric power cord are tightly fitted.
Electrical receptacles, or females, are fabricated from insulating materials such as nickel, silver, galvanized steel, or plastic. Receptacles run on standard 120-volt systems, while electrical equipment, such as industrial machinery that require a higher voltage, have heavy duty 240-volt receptacles. The majority of modern electric power cords have a ground pin for polarization.
Non-detachable electric power cords are hard wired into equipment or appliances and are not intended to be removed. They consist of a plug and strain relief connector attached to the piece of equipment using a double crimped lug or ring terminal. The nature of non-detachable electric power cords varies in accordance with the type of equipment to which they are attached. This aspect of their nature has to be carefully monitored to ensure that they are not damaged.
Detachable electric power cords are one of the most common forms of power supply tools and have residential and industrial use. They are referred to as line cords and consist of flexible cord with male and female electrical connectors. The male end is attached to a molded plug with prongs or blades while the female end has a molded electrical receptacle. The molding of the ends of an electric power cord is to ensure that the ends are sealed such that the prongs or blades are not exposed.
NEMA power cords are power cables with plugs and connectors for AC electricity as specified by the National Electrical Manufacturer Association. There are several types of NEMA power cords with a wide variety of connectors. After being founded in 1926, NEMA set the goal of standardizing electrical power supplies for the safety of consumers. NEMA standardized plugs and receptacles so that all electrical power supplies in the United States produce power cords that are universally acceptable.
The initial classification of NEMA connectors is divided into straight blade non locking and curved blade locking. The straight blade of connectors have a neutral wire, hot wire, and grounding pin or wire. They plug directly into a wall socket and have current ratings of 15 amps to 60 amps and voltage ratings of 125 V up to 600 V. Non-locking blade connectors are a common sight in homes.
The curved locking type of NEMA connectors are more secure and have a locking mechanism. They plug directly into a wall socket but are twisted to latch them in place to prevent accidental disconnections. The structure of a locking connector includes a neutral conductor, hot conductor, and a ground. Many locking connectors are used in industrial and commercial settings.
There are 25 non-locking NEMA plugs and receptacles that are numbered from NEMA 1 up to NEMA 24 and include a travel trailer connector NEMA TT-30. NEMA 2 and NEMA 10 are no longer used and have been replaced by other types of plugs and receptacles. Of the 25 NEMA non-locking connectors, NEMA 1, NEMA 5, NEMA 6, and NEMA 14 are the most commonly used with NEMA 1 being the simplest with two blades and receptacles without a grounding pin.
NEMA 1 plugs and receptacles are rated for 125 V and are common household plugs and receptacles. In recent years, the use of NEMA 1 plugs and receptacles has diminished as more manufacturers are turning to grounded plugs and receptacles.
NEMA locking connectors are numbered from NEMA L1 to NEMA L23 and come in three different types, which are two pole ungrounded, two pole grounded, and three pole ungrounded. They are rated for 125 V and include midget locking plugs identified by ML. The “L” in the NEMA number is an indicator that the connector is locking. The most commonly used locking connectors are NEMA L5, NEMA L6, NEMA L7, NEMA L14, NEMA L15, NEMA L21, and NEMA L22.
To better clarify and define electrical connectors, the National Electrical Manufacturer’s Association developed a naming system for standardization. The identifiers include two numbers with the first number indicating the plug configuration, which is its voltage rating, number of poles, and number of wires. The second number in the set that is separated from the first number by a dash represents the current rating of the plug with the standard amperages being 15 amps, 20 amps, 30 amps, 50 amps, and 60 amps.For example, NEMA 5-15 is a two pole and two wire connector with a voltage rating of 125 and current rating of 15 amps.
For further definition of some connectors, letters are added before the first number or after the second number with “L” placed before the first number to indicate that the connector is locking. NEMA L5-30P is a two pole, two wire locking plug with a current rating of 125 V and amperage of 30.
Regardless of the wide use of NEMA standards, there are still non-NEMA plugs in use. In most instances, they are application specific and not covered under NEMA standards. There are several variations in the quality of Non-NEMA plugs in regard to their blades, wiring, and grounding stems.
Extension cords supply power to equipment and are used in locations that do not have a convenient power source such as construction sites, emergency medical defibrillators, and power tools. They have a long cable that has a power plug at one end and receptacles at the other end and can be used as power adapters or “adapter cords”. Available in countless numbers of designs and options, extension cords are the best accommodation for a room that does not have a sufficient number of power boards.
The key factor in the choice of an extension cord is their flexibility, since they come in different sizes, gauges, construction, and the ways they are used. Unlike hard wired power supplies, extension cords are designed for temporary use, regardless of their rugged and durable design. The types of extension cords are divided into light duty, medium duty, and heavy duty.
As with NEMA codes, the letter codes for extension cords are used as descriptors to identify how an extension cord can be used. The lettering system consists of six letters in no particular order with subcategories under each letter. The six letters are S, W, J, T, P, O, and E. To provide a clear definition of the capabilities of an extension cord, the letters are grouped, such as SJOOW, which is a heavy duty, portable service extension cord for indoor and outdoor use with synthetic rubber insulation and neoprene rubber jacket.
Portable Extension Cord Letter Meanings | ||
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Letter | Meaning | Explanation |
S | Service | Severe heavy duty Service. These cords are portable cords that have a voltage rating of 600V (also 277/480 or 480) and can be used in place of SJ or SV in extra-severe service where abrasion resistance is needed. |
J | Junior Service | These service cords have a rating of 300V (also 120 or 120/208 or 120/240 or 240 or 277, but not 277/480). Examples include SJ SJO, SJOW, and SJT. |
T | Tinsel Cord | Only applicable if it is the first letter of the code for a portable cord. Example: TTXOW. |
T | Thermoplastic (if not the first letter of code) | This refers to the material the cord jacket is made out of. Thermoplastic material is light-duty and can be used as a consumer-grade portable cord. Examples include SJT, SPT, and SVT |
E | Elastomer | Short for Thermoplastic Elastomer, a flexible thermoplastic that looks and feels like rubber. This refers to the material the cord jacket is made out of. Thermoplastic elastomer material is medium-duty and performs better in colder temperatures than thermoplastic. (If a portable cord does not have a 'T' or an 'E', it is made of thermoset material, which makes it heavy-duty.) Examples include SEO/SEOW and SJEOOW. |
N | Nylon | Outer jacket material. |
O | Oil-Resistant Outer Jacket | Examples include SEO, SO STO, and SVO. |
OO | Both the Outer Jacket and the Insulation are Oil Resistant | Examples include SJOOW and SOOW. |
F | Fixture Wire | These cables are rated to 90°C. Examples include H07RN-F. |
P | Parallel | This cable is parallel-jacketed, meaning the conductors are not twisted around each other. Sometimes called "zip cord." Examples include SPT. |
H | Heat Resistant | Referred to as heater cord. This is used in UL cord types like HSJ, HS, HSO, and HSJO. |
HH | High Heat Resistant | |
V | Vacuum Cord | This is a light-duty portable cord, rated at 300 volts. Typically used with vacuum cleaners and other portable cleaning equipment. "V" is the UL marking in parts like SVT and SVO. |
RD | Range or Dryer Cord | Product examples include SRD, SRDE, and SRDT cord. |
W-A | Weather Resistant | UL approved for indoor and outdoor use. Examples include SEOO-WA and SJTO-WA. |
W | Weather and Water Resistant | A portable cord with a W means it's approved as weather (sunlight, moisture, etc.) and water-resistant and can be used indoors or outdoors. Examples include SEOW and SJOOW. |
Power cord splitters, known as cord splitters or power cable splitters, make it possible to use one outlet to power multiple devices. They divide a single power source into multiple outlets making it possible to expand the number of electrical connections. Power cord splitters come in a wide array of configurations including three way, four way, and more complex and intricate models.
Although power splitters may be assumed to be a version of extension cords, they have a very striking difference. Splitters are designed to provide power to devices that are in close proximity to the power supply, which is unlike extension cords that provide power at a distance from the power supply. Power cord splitters are used in relation to the power load they are able to handle and are a safe solution for multiple power distributions.
A power cord splitter allows plugging in of two or more components that receive power from a single outlet. They are widely used with home entertainment centers, computer systems, workshops, and offices. Power cord splitters come with 10 or 15 amps and voltages of 125 V or 250 V. Their typical wire gauges are 12, 14, 16, or 18 with heavy wire gauges used for more stressful conditions and purposes.
Electrical receptacles can be made from insulating materials such as nickel, silver, galvanized steel, or plastic. They are the openings in outlets where electronics can be plugged to provide electrical current. Most receptacles run on a 120-volt system. For heavy duty electrical equipment, such as industrial machinery, higher voltage receptacles are required such as heavy duty 240-volt ones. All types of receptacles are required to be grounded. Where multiple pieces of equipment are connected, cord splitters allow for plugging in two or more pieces of equipment into a single receptacle with numerous splitters able to accommodate varying wire sizes and voltage levels.
Manufacturers of electric cords have specifications that include cable temperature, jacket materials, wire shape, wire size, cord length, current rating, voltage rating, and the types of plugs and electrical receptacles. The standards for configurations and voltage capacity in North America is set by the National Electrical Manufacturers Association.
The NEMA system, as well as other international sets of standards, assist in maintaining consistency in fabricating electric cords to minimize the risk of malfunctions. Polarizing, or grounding, reduces the risk of electric shock or electrocution, which allows the plug to be inserted in only one direction to the socket ensuring the connected circuit is neutral, or grounded.
As the types of plugs vary in the world, so do the types of outlets or receptacles. Although the three pronged version with a grounding has been widely accepted, there are still parts of the world that have two prongs. Most of those designs allow the plug to be inserted only one way with prongs on an angle.
Electrical receptacles are dangerous and can be a source of shock, power shortages, or fires. Self-testing helps protect against electrical dangers and prevent unsafe conditions by conducting automatic tests on a device every second.
Self-testing receptacles have several features to prevent overloads or shortages. If they detect failure in a device, a light flashes to signal that the Ground Fault Circuit Interrupter (GFCI) needs to be replaced. They use a ground terminal back wire clamp, auto ground clip, and two back wire holes per termination for flexibility and to save box space.
The majority of electrical receptacles run on alternating current and have live or phase, neutral, and earth or ground components. They are made with insulating materials such as nickel, silver, plastic, and galvanized steel with three slots for two prongs and a grounding.
Electrical receptacles in the United States use a standard 120-volt system. Heavy-duty, 240-volt receptacles are designed for equipment with higher voltage such as electric ranges or industrial machinery. Aside from standard grounding or polarization, other safety features for receptacles include tamper and corrosion resistance for uses in harsh or hazardous conditions.
The basic function of a plug adaptor is to allow the plugs for different devices to fit into different outlets. They normally make it possible to use three prong plugs in old outdated two prong outlets, bypassing the grounding pin. Plug adapters are not a permanent solution for an existing system and should be used sparingly. Locations that have a metal breaker box and grounding system make it possible to generally use plug adapters.
Plug adapters, or plug converters, allow electrical devices to connect to sockets and plugs that are incompatible, which is determined by the configuration of the electrical receptacle where the prongs of the plug do not match the holes of the receptacle. Aside from making it possible for unlike plugs to connect, a plug adapter can also step voltage up or down to even out electrical differences. Voltage adapter converters are necessary for higher or lower voltage systems where electrical equipment will overload a device or not provide enough power.
Commonly used plug adapters found in the United States are for two prong receptacles that do not have a grounding pin. Plug adapters are especially necessary and essential when traveling internationally since many nations of the world do not have the same types of receptacles and voltage levels as the United States.
The structure of plug adapters consists of a socket and a plug. The socket allows the electrical device to connect to the adapter. The plug matches the configuration of the power source, usually a wall outlet. Universal plug adapters have a socket that can accept plug configurations of almost any country with the exception of South Africa.
The most common types of plugs are Type A with two conducting prongs, with one live and one neutral, and Type B, with both live and neutral contacts and an additional prong for grounding to prevent electrical shock. Both types are configured with a plastic molded body called a "jack" that holds the two blades apart and connects to the cord with the plug body.
Electricity flows through the blades, the blade-cord connection, and the power supply cord. Safety standards for electrical plugs were established in 1962 requiring all plugs to be three pronged grounded plugs forcing the plug to be connected to a socket in only one direction.
There are 15 different varieties of plugs in the world that run from Type A to Type O. Type A is the two pronged version that has gone out of use. Type B is the one that has been required since 1962 with a grounding prong. Type B is used in the United States, Canada, and Mexico while Types C through O are used in different parts of the world. Type C is used in Europe, South America, and Asia.
Outlet plug covers are safety additions that help prevent accidents and injuries from electrical shock. They protect outlets from environmental hazards and temperature changes. Plug covers allow electrical cords to be plugged and unplugged while blocking access to the receptacle when it is not in use.
A special form of plug outlet covers are used for inhospitable or harsh environments for corrosive resistance and thermal stability. Although dummy covers can be used for environmental conditions, a complete switch cover is a more viable solution that has a door that closes over the receptacle. They offer more secure protection and are made of highly durable plastics.
Additional accessories used with plug outlet covers include cord grips, dust shields, and tamper resistant covers. In very stressful, harsh, and dangerous environments Industrial-grade grounding systems are used.
An AC power cord is a detachable way of providing an alternating current of electric energy from a mains power supply to an electrical appliance or equipment. Serving industries like...
Electrical plugs, commonly known as power plugs, are devices responsible for supplying and drawing current from a receptacle to the circuitry of an electrical appliance...
A NEMA connector is a method for connecting electronic devices to power outlets. They can carry alternating current (AC) or direct current (DC). AC current is the typical current found in homes, offices, stores, or businesses...
A power cord is an electrical component used for connecting appliances to an electrical utility or power supply. It is made from an insulated electrical cable with one or both ends molded with connectors...
Power supplies are electrical circuits and devices that are designed to convert mains power or electricity from any electric source to specific values of voltage and current for the target device...
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