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Interfacing is a common term for a variety of materials used on the unseen or "wrong" side of fabrics in sewing. Interfacings support the fashion fabric ("shell fabric") of the garment and may be selected to change the hang of the fabric in some portions of the garment; for instance, a shirt collar has an interior stiffening from interfacing.
Sewing patterns specify if interfacing is needed, the weight of interfacing that is required, and the amount. Some patterns use the same fabric as the garment to create an interfacing, as with sheer fabrics. [2] Interfacing has three main 'types': woven, non-woven and knit. Each is designed to behave differently.
A fusible plug operates as a safety valve when dangerous temperatures, rather than dangerous pressures, are reached in a closed vessel. In steam boilers the fusible plug is screwed into the crown sheet (the top plate) of the firebox, typically extending about 1 in (25 mm) into the water space above it. Its purpose is to act as a last-resort ...
An electrical fusible link is a type of electrical fuse that is constructed simply with a short piece of wire typically four American wire gauge (AWG) sizes smaller than the wire that is being protected. For example, an AWG 16 fusible link might be used to protect AWG 12 wiring.
A 115 kV high-voltage fuse in a substation near a hydroelectric power plant Older medium-voltage fuse for a 20 kV network. These type of fuses may have an impact pin to operate a switch mechanism, so that all three phases are interrupted if any one fuse blows. High-power fuse means that these fuses can interrupt several kiloamperes.
The fuse elements used in most distribution cutouts are tin or silver alloy wires that melt when subjected to high enough current. Ampere ratings of fuse elements vary from 1 ampere to 200 amperes but a solid door will allow the full 300 ampere capacity of the cutout to be utilized.