every component that a circuit contains, with each component having its own special symbol. 2000/120 =16.66 amps A standard 20 amps outlet is designed to carry 80%, that would be 16 amps. 120v Circuit Single Pole Circuit Breaker 120v. NEC 110.13. This book is devoted mostly to schematics. I = V/R So a 2000 watt UPS will draw how many amps? To understand electronic circuits it is normal to draw a circuit diagram or schematic. When a circuit is connected a current will flow round the circuit. Circuit Analysis For Dummies gives you clear-cut information about the topics covered in an electric circuit analysis courses to help further your understanding of the subject. Rated ? A pictorial diagram, sometimes called a layout diagram, shows the actual physical arrangement of the circuit elements on the circuit board or chassis, so that you can quickly find and identify Listed Venting. Mounting and Cooling of 3. How much additional load will this circuit handle? The current is measured in Amps, or more usually for electronics a 1/1,000th of an Amp or milliamp (mA). The current is like the amount of water flowing through a pipe.