55A0811-20-94

Series:	MIL-W-22759 and MIL-C-27500, 55A0811
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Cable Type:	Hook-Up, Dual Wall
Moisture Sensitivity Level (MSL):	--
Wire Gauge:	20 AWG
Conductor Strand:	19/32
Conductor Material:	Copper, Tinned
Jacket (Insulation) Material:	Ethylene Tetrafluoroethylene (ETFE), Irradiated
Jacket (Insulation) Diameter:	0.050" (1.27mm)
Jacket (Insulation) Thickness:	0.004" (0.10mm)
Length:	--
Voltage:	600V
Operating Temperature:	-65°C ~ 150°C
Jacket Color:	White, Yellow Stripe
Ratings:	--
Features:	--

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Single Conductor Cables (Hook-Up Wire)Hook-up wire is a type of single conductor cable often used in low-voltage electrical applications, such as in internal wiring for electronic device connections. It is made of copper or a copper alloy and is known by various codes, such as 55A0811-20-94. This code, and other similar codes, are usually required to be specified when ordering hook-up wire. It is also important to understand what these codes mean and the components of the code itself. The first two digits in a code, such as 55 in 55A0811-20-94, represent the AWG (American Wire Gauge) (or also known as SWG - Standard Wire Gauge) of the wire. This is used to classify the wire according to its diameter, and the higher the number, the thinner the wire. A higher AWG rating means that it will have a lower resistance, meaning that it is more suitable for carrying greater current load at lower voltages. The second letter, in this case “A”, indicates the type of insulation used on the wire. For hook-up wire, the most common type is “Teflon®”, a flame retardant plasticinsulated material which is resistant to oil and chemicals. It is also designed to withstand high temperatures and is an ideal choice for hook-up wire applications. There are other types of insulation materials used in hook-up wire, such as Type “E”, which is used in specialty applications.The next three digits indicate the voltage rating of the wire, in this case “081”, and is the maximum voltage at which the wire can safely be used. This indicates the maximum continuous voltage which can be applied to the wire without any risk of breakdown. Lower voltage varieties are also available and vary according to the type of insulation specified.The final two digits in the first part of the code are the strand count of the wire, and in this case it is “20”. This is the number of individual strands of wire which are stranded together to form the conductor of the hook-up wire. The higher the strand count, the more flexible the wire will be, thus making it easier to work with. The last part of the code is the UL (Underwriters Laboratories) rating, in this case “94”. This is the safety rating of the wire, and is given based on the quality of the insulation material as well as the conductor used and other factors. The UL rating of a wire gives an indication of how suitable it is for use in different types of environments, and can be an important factor when selecting the appropriate hookup wire for a specific application.The application fields for hook-up wire are varied and include situations such as internal wiring for computers, domestic appliances, motor vehicles and even aircraft. It is used for low voltage wiring applications and is not suitable for use in high-voltage applications. The working principle of hook-up wire is simple – it is designed to connect two electrical points using a strand of copper or copper-alloy which is insulated to prevent short circuits or electric shocks. This is achieved by using the appropriate voltage rating, insulation material and strand count as specified in the code. Hook-up wire has become increasingly popular as it is cheaper and more convenient than traditional wiring techniques, and can be used in a wide range of electrical applications. It is also easy to work with and can be cut to bespoke lengths to meet specific requirements. When selecting hook-up wire for an application, it is important to consider the appropriate voltage rating, insulation material and strand count as specified in the appropriate code. This will ensure that the right wire is chosen for the job, as any mistakes can lead to damage or even injury.

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