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・ Circuit reliability
・ Circuit restoration
・ Circuit Ricardo Tormo
・ Circuit rider
・ Circuit rider (religious)
・ Circuit rider (technology)
・ Circuit rider (water/wastewater)
・ Circuit Riverside Speedway Ste-Croix
・ Circuit satisfiability problem
・ Circuit Scribe
・ Circuit Showdown
・ Circuit split
・ Circuit Switched Data
・ Circuit switching
・ Circuit topology
Circuit total limitation
・ Circuit training
・ Circuit Trois-Rivières
・ Circuit underutilization
・ Circuit Zolder
・ Circuit's Edge
・ Circuit-level gateway
・ Circuital
・ CircuiTikZ
・ CircuitLogix
・ CircuitMaker
・ Circuito Costanera (Buenos Aires)
・ Circuito da Boavista
・ Circuito de Albacete
・ Circuito de Baloncesto de la Costa del Pacífico


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Circuit total limitation : ウィキペディア英語版
Circuit total limitation

Circuit total limitation (CTL) is one of the present-day standards for electrical panels sold in the United States according to the National Electrical Code. This standard requires an electrical panel to provide a physical mechanism to prevent installing more circuit breakers than it was designed for. This has generally been implemented by restricting the use of tandem (duplex) breakers to replace standard single pole breakers.
==Code Requirement==
The 1965 edition of the NEC, article 384-15 was the first reference to the circuit total limitation of panelboards. , the location of this language is at Article 408.54 now titled "Maximum Number of Overcurrent Devices."
Non-CTL panels have not been made by reputable manufacturers since 1965.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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