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A power cord, line cord, or mains cable is an electrical cable that temporarily connects an appliance to the mains electricity supply via a wall socket or extension cord. The terms are generally used for cables using a power plug to connect to a single-phase alternating current power source at the local line voltage (generally 100 to 240 volts ...
For example, a 900-watt power supply with the 80 Plus Silver efficiency rating (which means that such a power supply is designed to be at least 85% efficient for loads above 180 W) may only be 73% efficient when the load is lower than 100 W, which is a typical idle power for a desktop computer. Thus, for a 100 W load, losses for this supply ...
The X-connector here provides 3.5 and 2.5 mm phone plugs and two sizes of coaxial power connector Universal laptop power supply with adjustable voltage between 12 and 24 volts. External power adapters can fail, or can become separated from the product they are intended to power. Consequently, there is a market for replacement adapters.
Ratings of NEMA 5-15 (type B) plug marked on the label (left: 7 A 125 V), engagement face, and IEC 60320 C13 connector at the appliance end of the cord (centre, right: both 10 A 125 V) Plugs and power cords have a rated voltage and current assigned to them by the manufacturer. Using a plug or power cord that is inappropriate for the load may be ...
In fact the fuse is there to protect the flexible cord between the plug and the appliance under fault conditions [50] [51] (typical British ring circuits can deliver more current than appliance flexible power cords can handle). BS 1363 plugs are required to carry a cartridge fuse, [52] which must conform to BS 1362.
Damaged power cords of portable air conditioners have caused many electrical fires, and about 350 deaths per year. [ citation needed ] To combat this, the 2017 National Electrical Code (NEC) [ 40 ] requires each portable air conditioner sold in the United States to have either a leakage current detector interrupter (LCDI) or a ground-fault ...
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