Electrician Vocabulary 1: Common Terms

接地故障

jiē dì gù zhàng

Leakage of current to ground

端子

duān zǐ

Connection point for wires

接线盒

jiē xiàn hé

Box for connecting wires safely

钳形表

qián xíng biǎo

Measures current without breaking the circuit

万用表

wàn yòng biǎo

Tool to measure voltage, current, resistance

功率

gōng lǜ

Rate of energy use

过载

guò zài

Too much current in a circuit

短路

duǎn lù

Fault where current takes an unintended path

负载

fù zài

Device that uses electrical power

接触器

jiē chù qì

Heavy-duty switch for large loads

继电器

jì diàn qì

Electrically controlled switch

变压器

biàn yā qì

Changes voltage levels

配电箱

pèi diàn xiāng

Box that distributes electricity to circuits

火线

huǒ xiàn

Carries voltage from the power source

零线

líng xiàn

Returns current in AC systems

接地

jiē dì

Safety path for electricity to go into the earth

断路器

duàn lù qì

Automatically shuts off power when there is an overload or short circuit

保险丝

bǎo xiǎn sī

A thin wire that melts to stop current when it gets too high

母线

mǔ xiàn

Metal bar that distributes power to multiple circuits