Distribution board

A fairly standard American circuit breaker panel manufactured by General Electric and using interchangeable circuit breakers

Illustration of breaker numbering in a North American type panelboard. Some labels are missing, and some lines have additional descriptive labels. The numbers on the toggles indicate the ampereage they will pass before tripping off and stopping all current. The top right breaker (Rated at 100 A) leads to a sub panel.

Electrical panel and subpanel with cover removed from subpanel.

A distribution board (also known as panelboard or breaker panel) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit in a common enclosure. Normally, a main switch, and in recent boards, one or more residual-current devices (RCD) or residual current breakers with overcurrent protection (RCBO), are also incorporated.

单词	Main switch
释义	Main switch 原声例句暮光之城：暮色 Aggravated, I snapped off the computer's main power switch, not waiting to shut things down properly. 一气之下，我啪地一下关掉了电脑的电源，不想再干等着按部就班地关闭电脑。英语百科 Distribution board A distribution board (also known as panelboard or breaker panel) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit in a common enclosure. Normally, a main switch, and in recent boards, one or more residual-current devices (RCD) or residual current breakers with overcurrent protection (RCBO), are also incorporated.
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Main switch

Distribution board