Download Circuit Breaker Box – Main Panel

Group Formally Known As the Team
Physics 211- Final Project
Monday, 26 July 2010
Anthony Tanios
Thai Pham
Matthew Buras
Jason Preston
Julian Moore
Background Information
Does Sharon and Stanley need some 240 V lines as well as 120 V ?
Sharon and Stanley need both the 120 volt and 240 volt wiring in their household. Some
examples of 240 volt appliances are air conditioning unit, clothes dryer, and water heater,
but in our project we are only going to be dealing with the range(oven/stove). It is the only
appliance that we are going to wire that uses 240 volt.
What voltage are the electrical lines coming into the house?
The voltage of the electrical lines coming into the house is 120 volt per hot wire. To
produce 240 volt needed for certain appliances, we use a dipole switch breaker in the
breaker box that allows 2-120 volt wires to combine that produce 240 volt.
How are the ratings on the circuit breakers determined?
A circuit breaker is rated by the voltage and the current. The ratings on the circuit breakers
signify the total load capacity of wattage that the circuit breakers can handle without
breaking. They are designed to carry 100% of their rated current but as a safety measure,
The National Electrical Code (NEC) determined that the safety capacity should only be 80%
of that rated load capacity of wattage.
How are houses wired?
All the wiring in the house is done in parallel because in series, the voltage splits
between the different types of small-appliances running in a closed circuit.
Is there a minimum number of outlets that must be wired for each room?
There is no minimum or maximum number of receptacles requirement by the NEC but
there are specific rules for their placement such as: include receptacles on all walls 24
inches wide or greater, include receptacles so a 6-ft. cord can be plugged in from any
point along a wall or every 12-ft. along a wall or more, and include a switch-controlled
receptacle in rooms without a built-in light fixture operated by a wall switch.
How are overhead light switches wired into the circuit?
An overhead light is wired in parallel with the rest of the circuit running in the wall, but
its switch is wired in series with it. It is placed on the hot wire before it connects back to
the overhead light and after it leaves the main circuit.
What questions should you ask Sharon and Stan in order to determine their wiring
needs?
To be able to wire the house for Sharon and Stan we need to ask them about the
different types and location of appliances they will be using (120 or 240 volt), and their
simultaneous uses.
Data Collected
Symbols Of Floor Plan Wiring
Living Room & Kitchen Floor Plan Wiring
S
15’
Main
panel
S
12’
GFCI
GFCI
15’
S
GFCI
GFCI
25’
GFCI
TV
GFCI
GFCI
GFCI
S
GFCI
GFCI
GFCI
GFCI
S
Living Room
Purple circuit: Uses a 120 volt , 14
gauge wires, duplex receptacles, and its
loaded on circuit breaker #3.
TV: Uses Coaxial Cables with
F-connectors.
Phone Outlet: Four 22 gauge wires.
Kitchen
Pink circuit: Uses 120-volt, 12 gauge wires,
GFCI Receptacles, and it is loaded on
circuit breaker #7.
Yellow Circuit: Dedicated for Microwave.
Uses 120 volt, 12 gauge wires , GFCI
receptacle, and it is loaded on breaker #6.
Orange Circuit: Dedicated for Dishwasher.
Uses 120 volt, 14 gauge wires ,a duplex
receptacle, and it is loaded on breaker #9.
Blue Circuit: Dedicated for Garbage
Disposal. Uses 120 volt, 14 gauge wires,
GFCI receptacle, and it is loaded on
breaker #8.
Light Blue Circuit: Dedicated for Range
(Oven/Stove). Uses 240/120 volt, 8 gauge
wires, 50 Amp. receptacle, and it is loaded
on breaker #4.
Black Circuit: Dedicated for Wok/Fry
Pan/Toaster Oven/Toaster. Uses 120 volt,
12 gauge wires, GFCI receptacles, and it is
loaded on breaker #5(Note: Only two
appliances can be used at the same time).
Phone Outlet: Four 22 gauge wires.
Bedroom & Main Bathroom
Purple circuit: Uses a 120 volt , 14 gauge
wires, duplex receptacles, and it is loaded
on circuit breaker #15.
10’
TV
1
2’
*
Light Blue Circuit: Dedicated for Computer.
Uses 120 volt, 14 gauge wires, isolated
ground receptacle, and it is loaded on
breaker #14.
S
Subpan
el
Orange Circuit: Uses 120 volt, 14 gauge
wires ,GFCI receptacle, and it is loaded on
breaker #16.
GFCI
SS
Green Circuit: Uses 120 volt, 14 gauge
wires , and it is loaded on breaker #17.
GFCI
8’
1
2’
VF
Phone Outlet: Four 22 gauge wires.
TV: Uses Coaxial Cables with
F-connectors.
Circuit Breakers & Panels
Types, Benefits and Uses:
Circuit Breaker Box – Main Panel
(1): Main Breaker switch of Main Panel.
(2): Breaker switch of hot wires(black and red) going to
Sub Panel.
(3): Breaker switch of Living Room.
(4): Breaker switch of Range(oven/stove).
(5): Breaker switch of Toaster/Toaster Oven/Electric
Wok/Electric Fry Pan.
(6): Breaker switch of Microwave.
(7): Breaker switch of Kitchen.
(8): Breaker switch of Garbage Disposal.
(9): Breaker switch of Dishwasher.
(10): Neutral Bus Bar(Main Panel).
(11): Ground Bus Bar(Main Panel).
(12): Outside Grounding Rod.
Note: Black and Red Wires= Hot Wires
White Wires = Neutral Wires
Green Wires= Ground Wires
Circuit Breaker Box - Sub Panel
(13): Main Breaker switch of sub panel.
(14): Breaker switch of the computer.
(15): Breaker switch of the spare bedroom.
(16): Breaker switch of the main bathroom
receptacles
(17): Breaker switch of the main bathroom.
(18): Neutral Bus Bar(Sub Panel).
(19): Ground Bus Bar(Sub Panel).
Note: Black and Red Wires= Hot Wires
White Wires = Neutral Wires
Green Wires= Ground Wires
Work Cited Page
“Circuit Breakers.” Buying Guide: Circuit Breakers. 2000-2010. <
http://www.homedepot.com/webapp/wcs/stores/servlet/ContentView?pn=Bre
akers&langId=-1&storeId=10051&catalogId=10053>.
Black & Decker. The Complete Guide To Wiring. Ed. Jennifer Gehihar. Minnesota:
Creative Publishing Int. Inc., 2008.