Spreadsheet: 7477eeef-cacc-425e-8102-f94167fc0b1e
Sheet: Sheet1

Grounding & Bonding and Electrical Protection of Infrastructure | Description
EARTHING | Lightning Risk Assessment/Evaluation
 | 8 year evaluation performed Y/N?
 | NFPA 70B Annual Ground Fault Test
 | UL Letter of Finding - conformance to ANSI/NFPA 780 or UL96A
 | Lightning Protection Institute-175,6 Certification
 | Ground Fault Circuit 25 ohm or less Y/N?
 | Earth Ground Resistance test - 2 point fault
 | Flagpoles-for air termination
 | Metal railings on roof-for air termination
 | Zone of protection-rolling sphere requirement
Spaced <100 ft apart | Structural steel framing - for down conductor
Typically minimum of 2 down conductors | Re-bar - for down conductor
 | H2O pipe - for down conductor
 | Ground rod electrodes
 | ground plates
 | ground loop (ring) electrodes
 | concrete encased electrodes
 | soil conditions-risk assessment
 | Pipes & conduits - for down conductor(secondary)
EQUIPMENT GROUNDING
 | Equalization - additional bonding requirements bet. datacom & power:short path w/ lg. conductors ie: data center grid
System Performance Evaluation | Diversion - bonding conductors
PURPOSE | Coupling of bonding conductor requirements
Equalization of hazardous voltages | accessible service ground/specific protection method
provide internal path to ground
reduce ESD, EMI, RFI | Primary Protectors UL497 - lightning & power faults
Supplment existing AC power systems grounding electrode system connection | Secondary Protectors UL497A - surge protection & sneak current (power faults & excess current draw
 | Data & Fire Alarm UL497B - Lightning transient protection
 | Attachments to Plumbing
 | Bonding conductors routed w/ minimum bends
 | Bonding connections
 | 6 [NAME] copper bonding min.
 | backbone bonded at sheath openings
 | On-site PBX requirement for specific ground potentional resistance
 | Spacing bet. circuit conductors & grnd critical (H-N spacing will reduce heating of circuit)
 | ESD - hi F currents minimized w/ flat strap
 | > 6AWG  of bldg grnd to equalize potential noise, EMI,FRI & faults
 | 2X Neutral  to reduce/eliminate harmonics
 | Zig-Zag xfmr
 | K-xfmr
 | Isolation Xfmr to neutralize  N-G potential differences
 | ESD - rise time of voltage
System degradation: BER in digital signal | Intermodulation distortion (IMD) - common in nonlinear behavior with multiple carriers (satellite FDMA,CATV)
 | Adjacent channel interference (ACI)
 | Narrowband interference - undesired carrier reaching the detector
 | Cochannel interference (CCI) proximity of system when sharing same frequency spectrum
 | Fading - result of multipath propagation w/ mobile communications
 | AM/PM - where phase shift is function of amplitude
 | Untracked carrier phase jitter - drift of carrier phase noise
 | Spurious phase modulation (SPM) discrete component of phase noise
 | Timing jitter - deviation from ideal sampling clock in detection process
 | Impulse noise - random, short, hi-amplitude noise bursts
 | Amplitude distortion - deviation from ideal flatness of channel
 | Group delay dispersion - variation in time different frequency components of signal pass thru channel
 | Intersymbol interference (ISI) - effect of dispersion shen pulses spread out to adjacent symbol slots
 | Entrance Facility (Exposed cabling inspection)
 | Equipment room (PBX etc.)
 | Telecom closets
 | TMGB
 | bonding conductor bet. AC grounding electrode
 | TBB cable terminations
 | conductors bonding to telecom equipment
 | bonding protectors (primary & secondary)
 | Insulated & Listed
 | Copper stranded/solid
 | Straight/short path
 | Bonded in  raceway
 | 5 ft. min. on rods w/ proper termination/bonding
 | Bend radius on protector grounds < 8 in., bend radius > 90 degrees
 | Sm. commercial bond to main AC service w/ BC to Structural steel < .1 ohm
 | TGB (TXB)
 | TBB
 | TBBIBC
 | TEBC
 | Lightning protector grounding system
 | Bonding bet. devices of OEM's
 | CBC
 | Inspection of existing bonding - loose connections, corrosion, physical damage, system modification & visible labeling
 | Panel Check:
 | Tightness of connections
 | Visual verifcation - N/G bonds, etc.
 | TRUE RMS voltage & current
 | Neutral & ground impedance
 | Phase Rotation
 | Noise measurements ( O'scope w/ line viewer)
 | Power line monitoring
 | Earth ground testing (main panel)
 | 2 point testing
 | Harmonic measurement
 | Power factor measurement
 | EMI/RFI tests (gaussmeter)
 | Receptacle check:
 | TRUE RMS voltage
 | correct wiring Isolated ground shorts
 | Neutral & ground impedances
 | Neutral & ground shorts
 | Power line monitoring
 | Noise measurements
 | Electro-static discharge
 | Visual verification
 | Tightness of connections
 | Power conditioner for correcting AC distribution & grounding-screwdriver