Class 1 Wire
Shock and Fire hazard exist. 600v or more
Class 2 Wire
Neither shock nor fire hazard exist. 150v or more
Class 3 wire
Not Fire Hazard, but shock hazard. 300v or more
Types of Cable (4)
Coaxial
Unshielded Twisted Pair
Shielded Twisted Pair
Fiber Optic
Coaxial Cable
Commonly used for RF and Video
Unshielded Twisted Pair
Hi Speed Data
Shielded Twisted Pair
Audio and Low Speed Data
Fiber Optic
Long Distance Audio, Video, Data
Signal Seperation
Physical Distance among cables of various signal levels
Stripping Cables
No more than 10% of strands in a wire containing more than 21 strands can be lost
Mounting Malfunctions (5)
Improper Calculations Shear - break from wall Tensile Strength - Hardware's Elasticity physically stretches Pull Out Placement of Bolts
Minimum Safety Factor
5
Mounting Types (3)
Floor
Wall
Overhead
Wall Mounting (2)
Can the wall withstand the weight of the load. Investigate wall construction
Will the weight of the load pull the assembly from the wall
Wall Blocking
Nogging, Dwang
Overhead mounting in concrete (2)
Poured Pan - waffle looking concrete
Post Tension - smooth with hi tension cables within (drilling into a cable in post tension concrete can snap)
Control Systems - HMI
Human Machine Interface
HMI Components (3)
Hardware
Software
Firmware
Hardware Components (4)
CPU
User Interface (touch panel, wall buttons)
Transmitters and Receivers
Interface Components
Ethernet
Transmits Data over LAN
LAN
Local Area Network
Ethernet Data Speeds (4)
10 Mbps
100 Mbps
1 Gbps
40/100 Gbps
Ethernet Transmission
Signals are transmitted serially, one bit at a time, over the shared signal channel
MANs
Metropolitan Area Network. LANs are connected together of over a Corporate Campus