The three basic components of any electrical circuit:

1
The three basic components of any electrical
circuit

• Power Supply
• Closed pathway for charges to follow.
• Load (Any electrical device which utilizes
  electrical energy.)

2
Voltage Electric Potential Energy /
ChargeVoltage 1 J / 1CVoltage qEd/ q Ed

• Current The flow of charge through a conductor.
• I q / t
• 1A 1C/1s

3
Power Energy / time1 Watt 1J / 1sPutting
everything together1 Watt (1 J / 1C)( 1 C/
1s)P V I We will be using this relation of
current voltage and power for the home assignment.
4
Fuses and Circuit Breakers protect a circuit
against too much current flow.Since current in a
wire produces heat, too much current could be a
fire hazard.
5
A GFI (previously GFCI) is a Ground Fault
Interrupt.A GFI protects the user from an
electrical shock as it measures the amount of
current entering and leaving the device. If a
small imbalance is sensed, the circuit opens in a
fraction of a second. http//hyperphysics.phy-ast
r.gsu.edu/hbase/electric/gfi.html
6
GFIs are required by code in bathrooms and
kitchens or whenever an outlet is near water.
7
A typical 120 VAC three wire system.

• http//hyperphysics.phy-astr.gsu.edu/hbase/electri
  c/bregnd.htmlc3

8
Wire Color Codes

• Any color can be used for the hot wires except
  white or green.
• White is always used for the neutral wires.
• Green is ground the world round.

9
Wiring rules, tips, and techniques

• When attaching a wire to a screw-type connection,
  the wire must be curled in a clockwise direction.
• When attaching a wire to a clamp-type connection,
  the wire should not be curled at all.
• Switches are placed on the hot side of the
  circuit.
• Wires must be run through conduit to satisfy
  Illinois wiring code.

10

• The ground prong points to the right when
  installing a duplex (outlet) on a wall.
• 15 Amp circuit breakers may be used for any room
  of a house except the bathroom or kitchen, where
  a minimum of a 20Amp service is required.
• Silver screws are attached to the neutral side of
  the circuit, while gold screws attach wires on
  the hot side of the circuit.