Tools and Cables Flashcards
Pocket Tape
make sure have metric and imperial
Spirit Level - alcohol doesn’t freeze - outdoor
Chalk line - stretch it out on surface (let it retract)
-leaving chalk residue
Blade for what your cutting
crosscut (against grain)
Rip cut (along grain)
-compass saw (protect wires)
Soft material - coarse teeth
Hard material - fine teeth
Files
shank (tail end) - to be hammered into wooden handle
rasp (coarse & sharp)
double & single cut
Claw hammer (flat & straight)
carbon steel should not be hammered
peening (tap to shape) - to dent
You could fix hammer head (but not by hammer to hammer)
Centre punch (only we need) to drill hard metal
Wrench
open straight
box angle (won’t cut)
-combination wrenches & sockets
Canadian Tire
Home Depot
6 point (more torque)
12 point (do square and open)
variable speed (know what’s going on)
impact (instant)
Crescent wrenches
Allen wrenches (don’t worry about metric)
Robertson (colour coated)
1,2, and 3 (sizes) (big to small) Black to red to green
0, 00 (big to small) (yellow to orange)
1 biggest
00 smallest
at least 3 different sized (straight blades)
Misceallaneous
Nut Driver
Fish tape (conduit pulling)
Reacher pole
powder actuated tools
Power Tools
Twist Drills (metal cutting standard size) (can be hand or drill bit)
Number bits (drill bit) (tapping holes)
Dimensions (mm, inches)
Auger (constantly spiral removes materials) (tip to push it through) (drill)
Carbide Topped Bits (concrete, masonry, bricks, and tiles) (rotating hammer) (combination with)
Holes saws drill hole on board or wood to install box (light fixture)
Cable cutters (soft non-ferrous material) (BX)
adjust potentiometer - electronics - insulated & metal side
Install Armoured Cable
must be laid on face of masonry walls (buried in plastic)
if conductors are not larger than No. 10 AWG (used for extension of existing outlets)
CMA up, AWG down, then Resistance down
installing Cables through wood & metal framing member
watch out for flat installations (studs)
-require mechanical protection
Electrical boxes
identify boxes (for purpose)
start & end (box)
join middle (box)
approved cover (completely enclosed)
knockout holes (must be filled)
accessible (boxes) (attic, floor) (has to be accessible)
Combustible combustion (wood frame) (not cement)
-Loomex NMD-90
Residential boxes (metal) - up to 12 gang boxes typical
-can add gang
-need 6 inches of free insulated conductors
Residential boxes
1/2 (for siding)
Mud ring (wall board)
Residential boxes Plastic
some have gasket (vapour barrier) (moisture) - can’t get through
banana (yellow)
plastic - hammered
metal - screwed
Rule 12-300 - nail box to stud
4 11/16 or (over 4 inches) - need second piece of wood to support (any two sides) (need both)
- pulling plug breaks wall bits
bracket to support box (ceiling)
Residential box (steel stud)
flagges use (sheet metal screw) to lock around steel stud
Residential accessories
extension ring if box if set too deep in wall
Ganged boxes
12-3010 - need support for ganged sectional boxes
Wet locations
normally use PVC boxes
RAB boxes (might be aluminum with gas garb)
Specialty boxes (floor box)
-Mounted before cements is poured (masonry box)
-need steel barrier to avoid keeping different circuits together
Box fill
too many conductors jammed in box (possible cut conductors)
more conductors more heat
add one (duplex) - have to add or remove to conductors
-count number of wires (conductors)
-don’t count ground but wires
-one don’t count
-two or more (add or deduct) (conductors)
Combustible - Loomex - Residential
non - combustible - BX - Commercial
Two wire (neutral has raised edge) - no ground
extra low voltage 0 -30 volts
low voltage 31 - 750 volts
higher voltage 750 to higher volts
30.5 - (doesn’t exist)
Control circuit
doorbell, garage button, thermostat
-shield (cover PVC) - communication
shield (from mutual induction or ghost)
Jacket colours
Yellow GFCI
Blue AFCI
40 - 50 feet
TECK has inner & out jacket (always copper)
ACWU cable (almost always aluminum) - copper
- not similar (apparently)
weight difference?
8 - 4/0 (AWG size)
Neutral supported cable (NS) - landline? Powerline? = attach to hydro in front of house
neutral - grounded - 3 wire circuit
Triplex
Duplex (one lives, one neutral)
-copper (near ocean)
-usually aluminum
Aluminum sheath cable (ASC)
-aluminum & PVC jacket
- like Pyrotenax (not mineral insulation)
Voltage rating (most rated up to 600 V)
dielectric strength (measure in volts per mil (thickness)
Temperature rating (melts plastic)
UV
Chemical environment
mechanical damage
Cabtire - flexible cable
flat conductor cable (FCC) - like flat loomex
-called under carpet (offices)
Rubber (natural & silicone)
flexible - extension cords & welding cable
55 degrees celsius minimum
Busbar (bare copper)
-panels
Polyethylene
-marked XLPE or X Link (cross linked)
-thermosetting?
Thermoplastics
(PVC) Polyvinylchloride (600 V limitation)
T (dry)
TW (wet and dry)
TWU (underground)
larger cables (colour strip)
common (neutral) conductors (white & grey)
(green) (bonding) (grounding) (Bare)
Anything other colour (live) (hot)
Joist & Stud
Joist - horizontal (wood)
Stud - vertical (wood and metal)
