<P> A C8B inlet type is defined by the standard, for use by dual - voltage appliances; it has three pins, and can hold a C7 connector in either of two positions, allowing the user to select voltage by choosing the position the connector is inserted . </P> <P> A similar but polarized connector has been made, but is not part of the standard . Sometimes called C7P, it is asymmetrical, with one side squared off . Unpolarized C7 connectors can be inserted into the polarized inlets; however, doing so might be a safety risk if the device is designed for polarized power . Although not specified by IEC 60230, and not clear if any formal written standard exists, the most common wiring appears to connect the squared side to the neutral, and the rounded to the hot line . </P> <P> Most desktop computers use the C14 inlet to attach the power cord to the power supply, as do many instrument amplifiers, monitors, printers and other peripherals . A power cord with a suitable power plug (for the locality where appliance is being used) on one end and a C13 connector (connecting to the appliance) on the other is commonly called an IEC cord . IEC cords are used to power many pieces of electronic equipment, including computers, instrument amplifiers, professional audio equipment and virtually all professional video equipment . </P> <P> There are also a variety of splitter blocks, splitter cables, and similar devices available . These are usually un-fused (with the exception of C13 cords attached to BS 1363 plugs, which are always fused). </P>

What is the difference between c13 and c14
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