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Electrical Panels - Problem Set 2.2

  1. Match the following Key Terms with the correct definition.
Definition Key Term
  1. ____ is attached to ground rods that ensure the electricity always has a safe path to ground, which prevents electrocution
  1. Neutral bus bar
  1. ____ are large electrical terminals that carry electricity to the circuit breaker
  1. Electrical load
  1. ____ carries the electricity from the circuit breaker through a “hot” wire (often black or red wire) to the appliance and returns the used electricity back to the neutral bus bar through the neutral wire (often white wire)
  1. Ground bus bar
  1. The switch directly after the utility meter that can be flipped to cut power to everything downstream
  1. Short circuit
  1. An accidental circuit with no intentional load
  1. Circuit breakers
  1. Any component of a circuit that consumes energy, like an appliance plugged into an outlet or light fixture
  1. Service wires
  1. ____ is attached to the neutral service wire and used to return the electricity back to the electrical grid
  1. Main bus bars
  1. _____ carry electricity through overhead or in-ground lines from the electrical grid, through the utility meter, and into the home’s panel
  1. Branch wiring
  1. The amount of electrical current that if exceeded, the breaker will cut power to that circuit.
  1. Main breaker
  1. ____ attach to the main bus bars, controlling the flow of electricity into the branch wiring, as well as serving as a safety device designed to protect against overcurrent or short circuit.
  1. Amperage rating


  1. Imagine you have a set of three outlets on a 20A, single pole circuit breaker. You want to make tea in your 1000W electric kettle, heat               up a breakfast burrito in the 1500W microwave, and make toast in the 800W toaster all at the same time. Will the circuit breaker trip?                 (Hint: use the equation watts = volts x amps).