What Are Plugs?

Power plugs are detachable connectors that are responsible for supplying electric current from the power source to an electronic device. Different kinds of power plugs are available for varied kinds of wiring systems. These plugs normally have pins that are inserted into the outlet. It is with the help of these pins that the electric current travels through insulated wires and reaches an appliance/device/machine. Power plugs are divided into several categories on the basis of the country they are meant to be used in as well as specific power requirement.

What are Plugs Used For?

Specialized power plugs are used for specific types of instruments, equipment, machinery, and computers. Some electrical connectors are designed for use in hazardous environments or marine environments. Power plugs are used in almost every industry including residential, commercial, industrial, and medical facilities.

Materials for Plugs

Insulation Inspection

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Stainless Steel Inspection

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Specifications Of Plugs

Input and output voltage (V)

Amps (A)

Poles

ontrol one path of the circuit. A pole is an outlet terminal for a switching device, a combination of mating contacts, or both.

Wires

transfer the power between devices. In general, a single phase volt system will have two wires if only the lower voltage is available. One wire is for the phase and the other is neutral. If higher and lower voltages are available, the power plug will have three wires; Two phase wires and the neutral.

Color

s important to consider for the aesthetics of the home or commercial space. Color may also be important to serve as a warning of high voltage or dangerous lines.

Blade and Pin Type

Straight

Straight blades are non-locking plugs. They are inserted at a right angle to the plane of the matching device face.

Locking

Locking blades lock into their matching connectors. The locking occurs when the plug or receptacle is rotated wither clockwise or counter clockwise.

Pin and Sleeve

Pin and Sleeve plugs have round pin contacts. The mating plugs are inserted at a right angle to the plane of the receptacle face.

Grounding:

  • Grounding is the term used to describe a safe path for electricity to move from a defective outlet, fixture, appliance or tool back into the earth, which is a very good electrical conductor. There are different grounding options available based on the needs of the system. These include:
  • Non-grounding: plugs do not have a ground option.
  • Standard grounding: devices have a standard embedded ground terminal.
  • Isolated grounding : devices use a ground path that is isolated from the facility's grounding systems. This increases the resistance of sensitive electronics to surges. They also provide a clear grounding path to the service panel and help reduce electromagnetic noise that can interfere with equipment operation.
  • Self-grounding : plugs establish a connection to en existing grounding path such as a metal wiring device or metal conduit, gas or water pipe, or ducting or structural steel.
  • Ground fault circuit interrupter (GFCI):plugs include a built-in circuit that detects leakage current to ground on the load side of the device. When leakage current is detected, GFCI interrupts power and prevents hazardous ground fault conditions. National Electric Code NFPA-70 requires GFCI use in many indoor and outdoor locations.

Features of Plugs

Power plugs have several features available that may be beneficial for user application.

Corrosion resistant

Corrosion resistant devices are made of special materials and/or plated metal parts that are designed to withstand corrosive environments. Corrosion resistant devices must pass the ASTM B117-13 five-hundred hours Salt Spray (Fog) Test with no visible corrosion.

Dust proof

Devices are designed so that dust will not interfere with their operation. The IP suitability rating describes the degree of protection that a device offers against the ingress of foreign objects (e.g., IP 20).

Tamper resistant

Devices are constructed so that access to their energized contacts is limited. Tamper resistant receptacles are required by the National Electric Code NFPA-70 in specific pediatric care areas in health care facilities.

Power light

Devices include a power light to indicate if they are live. The receptacle may also be illuminated to make connection easier in dim or dark work spaces.

Watertight

Devices are constructed so that water cannot enter under specified test conditions. The IP Suitability Rating designates the degree of protection a device offers against the ingress of moisture and water

Quick connect / disconnect

Connectors incorporate a quick-connect mating geometry, typically by twisting and seating for positive contact. They can be disconnected quickly and then easily connected to another machine or device.

Integrated filter

Devices provide protection against unwanted signals or magnetics and may provide signal conditioning or isolation. Typically, filters are designed to reduce electromagnetic interference (EMI) and radio frequency (RFI).

Fuse protection

Devices include integral fuse protection against mild to moderate spikes or peaks in electrical supply. The fuse will blow before connector is damaged.

Integral surge protection

Devices include integral surge protection against mild to moderate spikes or peaks in electrical supply.

Integral circuit breaker-

Devices include an integrated circuit breaker that will "trip", severing the connection to the electrical supply, in the event of an excessive power transfer.

Integral switch

Devices are equipped with an integral switch. Toggling the switch to the "off" position stops the electrical power transfer through the connector.

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