Cord - Cord (English spelling)

Japanese: コード - こーど（英語表記）cord

A type of electric wire. It is made by twisting together many (20-112) thin conductors (soft copper wires with a diameter of 0.12-0.32 mm) with a cross-sectional area of 0.5-5.5 square mm, and is covered with rubber such as natural rubber, SBR (styrene-butadiene rubber), chloroprene rubber, EPM (ethylene-propylene rubber, also abbreviated as EPR), or polyvinyl chloride, and is mainly paired in pairs. It is easy to bend and move around, so it is mainly used indoors. It is used in small electrical equipment with an AC voltage of 300 volts or less, and there are the following types depending on the purpose and structure, all of which are specified by JIS (Japanese Industrial Standards).

[Teruo Sakuma and Yoshiji Oki]

Rubber cord

It is used for indoor hanging lights, etc. Because it uses rubber as an insulator, it has better heat resistance than polyvinyl chloride, but because cotton thread is used for the external braiding, it is vulnerable to moisture. There are twisted cords made by twisting single-core cords together, spun cords made by braiding cotton thread on a twisted cord, and round spun cords made by inserting an intermediate thread between the cores of spun cords to give them a round finish.

[Teruo Sakuma and Yoshiji Oki]

Vinyl cord

It is used in electrical appliances used indoors, such as electric fans and refrigerators. Because it uses polyvinyl chloride as the insulator, it can be colored freely and has a beautiful appearance.

[Teruo Sakuma and Yoshiji Oki]

Vinyl cabtyre（cabtire） cord

The insulation is thin, at 0.6 millimeters, and the conductor is made of twisted cores covered with insulation, making it highly flexible and used in power cords for retractable vacuum cleaners and other devices.

[Teruo Sakuma and Yoshiji Oki]

[Reference items] | Rubber | Electric wire | Polyvinyl chloride

Main types of codes
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Main types of codes

Cord current capacity
©Shogakukan ">

Cord current capacity

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

電線の一種。細い導体（軟銅線で直径0.12～0.32ミリメートル）を多数（20～112本）撚(よ)り合わせ、導体断面積は0.5～5.5平方ミリメートルで、その上に天然ゴム、SBR（スチレン・ブタジエンゴム）、クロロプレンゴム、EPM（エチレン・プロピレンゴム、EPRとも略す）などのゴム、あるいはポリ塩化ビニルなどを被覆し、主として2本で1対にしてある。屈曲しやすく移動して使用でき、おもに屋内で使われる。交流300ボルト以下の小型電気機器に用いられるが、用途や構造によって次のようなものがあり、いずれもJIS(ジス)（日本工業規格）で定められている。

［佐久間照夫・大木義路］

ゴムコードrubber cord

屋内の吊(つ)り下げ灯などに用いられる。ゴムを絶縁体としているので、耐熱性はポリ塩化ビニルよりよいが、外部編組(へんそ)に綿糸を用いるため湿気に弱い。単心コードを撚り合わせた撚りコード、撚りコードの上に綿糸編組をした袋打ちコード、袋打ちコードの線心間に介在糸を入れて丸く仕上げた丸打ちコードなどがある。

［佐久間照夫・大木義路］