A space in which the joining of inter- or intra-building telecommunications backbone facilities takes place. An entrance room may also serve as an equipment room.

Insulated wires used in buildings for light and power, 600 V or less.

Excessive electrodeposition that occurs on high-current-density areas, such as corners or edges. Also applies to excess enamel on magnet wire insulation. It defines the relative thickness of insulating magnet wire films, for example, as heavy or single build.

A single block wiredrawing machine of very heavy construction capable of cold drawing large diameter sizes of rods between 40 mm and 6 mm (1.6 in. and 0.236 in.).

See Redraw Wire.

An electrolytic pickling process in which a very small amount of tin is plated on the steel during the pickling process and after the scale has been removed. This is claimed to prevent further attack and to reduce corrosion in storage.

Clips used as an alternative to splicing. The casting is fitted on the loaded or long part of the rope and the U-bolt on the short part fitted through the casting and screwed tight by means of a nut. For the best results, all the clips should be fitted the same way round.

A man-made or synthetic rubber used as a replacement for natural rubber. A synthetic rubber insulation of styrene-butadiene; was known as GR-S, now as SBR. See Nitrile-Butadiene Rubber and Styrene-Butadiene Rubber.

A number of wires twisted together in the same direction and in a uniform manner that provide a more flexible conductor than a strand. When the number of bunches exceeds four, they are arranged in concentric layers. Alternate layers are usually laid in opposite directions. Cables are bunched when two or more are contained within a single conduit, duct or groove, or, if not enclosed, are not separated from each other.

A coil helically wound and subsequently bunched.

A stranded construction in which the individual strands are randomly laid and twisted in the same lay direction and same length of lay. The strands do not follow a geometric arrangement or pattern.

A number of bunches twisted together in the same direction and in a uniform manner.

A number of stranded bunches twisted together so that each stranded bunch, with the exception of the center one, has a helical form of predetermined lay ratio.

A stranded conductor in which all wires are twisted together in the same direction, and with the same lay throughout.

A machine that forms individual strands or cables into a desired geometrical formation. They can be single-twist (also referred to as cablers) or double-twist bunchers (DTB). The DTBs were once used nearly exclusively for non-critical twisted or bunched wire products (such as steel cord, welding wire and grounding cables), but have evolved to where they have replaced single-twist bunchers and more traditional stranding methods for demanding products, such as LAN, Cat. 5, Cat. 5e and Cat. 6 cables, building wire, appliance wire and machine tool wire. The DTBs are able to run much faster yet with limited elongation loss.

The main difference between a twinner and a buncher is that in most cases a twinner processes just two single wires or flexible cores that are supplied by motor-driven payoffs with a dancer control or a drag brake(s) and the take-up reel is the only means of setting the speed. Conversely, a buncher can have many wires from one or more reels or stem packs. The product speed is set by an internal capstan and the take-up reel is in torque mode.

Term for a plurality (group) of strands twisted together in a random manner in the same direction in one operation without regard to geometrical arrangement of specific strands. This is in contrast to stranding, where the plurality of wires is twisted into a geometrically consistent finished strand.

Term used for a dead-block coiler, which is a type of take-up used in wiredrawing machines.

A number of lengths or coils of wire bound together. A unit of specified weight or count, secured, which then can be handled by hand.

A cable installed directly in the earth without use of underground round conduit. Also called Direct Burial Cable.