Equations
A2+B2=C2
Pythagorean Theorem
Goes on the end of a conduit. Meant to fasten conduit to a device box.
Box connector
Sheathed cable that comes in various sizes. Houses 1 or more hot conductors, a neutral and a ground conductor
Romex
Protects your head from physical damage
Hard hat
Before installing wire nuts you should _________ wires
Pre-twist
Area of circle
Joins two pieces of conduit together
Coupling
Houses conductors but has a metallic sheathing to protect conductors from physical damage
Armored cable, MC
Protects your eyes from damage
Safety Glasses
After installing wire nuts or terminating conductors under screws or lugs you should ____________ the wires
Tug test
I=V/R
Ohm's Law
Used to fasten and support conduits to walls
Straps
Used to supply residential buildings with power. These conductors get attached to the power distribution lines.
Service entrance cable
Prevents falls from ladders or lifts
Harness
When installing conductors on breakers we should ________
Check to make sure wires meet the amperage rating for breaker
I=P/E
Power Equation
Used to bond metal enclosures to the grounding electrode conductors.
Ground Tail
Individual conductors installed in raceways. Typically used in commercial applications. Not meant for wet locations.
THHN Stranded
A device that only allows the user to fall a short distance
Retractable harness
When troubleshooting devices, what are two steps we should take before beginning work
Lock out tag out, test voltage
CM=2KIL/Vd
Circular Mills Voltage drop
Installed at first means of disconnect. Creates a path for current to flow to ground
Grounding Electrode System
Transmits data communication signals
Cat6
Should be used when decibel level reach 85 decibels or more.
Hearing protection
When installing conductors what are 2 things we should check
Proper voltage for device and proper wire size to handle amperage