earth wiren.

Brit.

/ˈəːθ wʌɪə/, U.S.

/ˈərθ ˌwaɪ(ə)r/

Origin: Formed within English, by compounding. Etymons: earth n.¹, wire n.¹

Etymology: < earth n.¹ + wire n.¹

A wire that provides an electrical connection to the ground.The purpose of an earth wire may be to protect against accidental electric shock (by providing a route for current that would otherwise pass through a person), or against possible damage (by limiting the increase in voltage that can occur in a device). In some situations, such as telegraphy, an earth wire functions as one of the conductors (cf. earth return n. 1).

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > conduction to earth > [noun] > wire

earth wire1847

earth1857

neutral wire1893

1847 Mechanics' Mag. 20 Mar. 276/2 A long strip of brass is let in the entire length at the back of the slide to which the earth wire is connected.

1867 R. Sabine Electr. Telegr. i. v. 92 The coils m m of the electro-magnet terminate in the binding-screws l′ l̀″ to which are brought respectively the line and earth wires.

1966 Buying Secondhand (Consumers' Assoc.) 72 If the appliance is intended to be earthed, make sure there is an earth wire fitted.

2002 R. D. Treloar Plumbing: Heating & Gas Installations (ed. 2) vi. 252 Where it is inconvenient to incorporate a socket-outlet within the loop of the circuit..it is possible to run a single twin and earth wire to the socket.

This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).

单词	earth wire
释义	earth wiren. Brit. /ˈəːθ wʌɪə/, U.S. /ˈərθ ˌwaɪ(ə)r/ Origin: Formed within English, by compounding. Etymons: earth n.¹, wire n.¹ Etymology: < earth n.¹ + wire n.¹ A wire that provides an electrical connection to the ground.The purpose of an earth wire may be to protect against accidental electric shock (by providing a route for current that would otherwise pass through a person), or against possible damage (by limiting the increase in voltage that can occur in a device). In some situations, such as telegraphy, an earth wire functions as one of the conductors (cf. earth return n. 1). ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > conduction to earth > [noun] > wire earth wire1847 earth1857 neutral wire1893 1847 Mechanics' Mag. 20 Mar. 276/2 A long strip of brass is let in the entire length at the back of the slide to which the earth wire is connected. 1867 R. Sabine Electr. Telegr. i. v. 92 The coils m m of the electro-magnet terminate in the binding-screws l′ l̀″ to which are brought respectively the line and earth wires. 1966 Buying Secondhand (Consumers' Assoc.) 72 If the appliance is intended to be earthed, make sure there is an earth wire fitted. 2002 R. D. Treloar Plumbing: Heating & Gas Installations (ed. 2) vi. 252 Where it is inconvenient to incorporate a socket-outlet within the loop of the circuit..it is possible to run a single twin and earth wire to the socket. This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022). < n.1847
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