Residential Wiring 2 Flashcards
Voltage available in one’s house
240 V
Why is the electrical code important?
It ensures there will be no shocks or fires if followed correctly
Who should be supervising if an electrical wiring job is being attempted at home?
Competent adult familiar with electrical safety
Where does electricity flow to?
The ground
What is the electricians rule?
You should always work with one hand behind your back, never allow youself to be a path for electrical flow
4 parts of an electrical circuit
Source, load, control, conductor
Most commonly used plier by Electricians
Linesmen
Example of a control, a load, & a source
Control - Switch
Load - Oven
Source - Breaker Panel
What should you do when resetting breakers in breaker box?
Check to see nothing is plugged into the circuit
Canadian Electrical Code
Series of laws governing the installations of wiring in commercial property
Who governs the electrical code of Canada?
Province you live in
Who can pull a permit?
Home owner, electrician, contractor
Penalties of breaking electrical code
Fines
Do you have to loop cable going into any electrical box?
Yes
Most common wire brand in Canada
Lumex
How high should gang boxes be from the floor?
12 inches
What screw driver do you use for gang boxes?
Yellow robertson
Which wires can be switched?
Hot wires
Robertson Screwdriver
-Square head
-Used for most of house wiring
Slotted Screwdriver
Should only be used if a Phillips or Robertson screwdriver cannot be used
Long Nosed Pliers
-Used for making small bends in wire for attaching it to screw terminals
Phillips screwdriver
-Cross shaped tip
-Used to put cover plates on wiring boxes
Wire strippers
-Used to cut wire & strip off insulation
-#14 gauge used in labs
Diagonal Cutters
Used to trim off wire in awkward situations
Why are the terminals on a switch brass colored?
Because you are switching the hot line
Line Pliers
-Used in jobs where strength is needed
When are three way switches used?
When you need 2 switches controlling one load
How to determine the common terminal in three way switch?
It is the darkest terminal
Two main purposes of grounding
Prevent shocks & damage to equipment
Which size slot corresponds to each type of wire in a cable?
Small Slot - Hot
Large - Neutral
U-Shaped - Ground
What is overcurrent protection?
A device which prevents an excess amount of current from flowing through a conductor, usually a fuse or breaker
Armour Cable
Metallic sheathed cable used in places where there is a lot of heat
How are boxes ganged?
By taking one side off each box & screwing them together.
Conduit
Metallic piping system which is used where exposed wiring may be damaged
Tools needed for house wiring
-Cable Ripper
-Diagonal Pliers
-Needlenose Pliers
-Linesman Pliers
-Wire stripper
-Robertson screwdriver
-Slotted screwdriver
-Hammer
Materials needed for house wiring
-Receptacle Box
-Octagon Box
-SPST Switch
-Connectors
-Nails
-Wire
Rules for wiring plugs
-Polarized
-Grounded
-Wired in parallel
Rules for plug outlet location
-All electrical appliances along wall are within 6 ft of outlet
-Fireplaces do not need outlet
-Wall space less than 36” does not require outlet
Who enforces the the Canadian Electrical Code?
-Manitoba Hydro
-Local Inspectors
Who can obtain a permit for house wiring?
-Contractors
-Journeyman electricians
-Residents working on home
