Grounding and Bonding in Electrical
Systems Questions And Answers.
NEC Terminology - answer:-Terms defining rules for electrical installations.
Bonded - answer:-Connected for electrical continuity and conductivity.
Bonding Jumper, Supply-Side - answer:-Conductor ensuring conductivity on supply
side.
Bonding Jumper, System - answer:-Connects grounded conductor to supply-side
bonding jumper.
Grounded - answer:-Connected to ground or conductive body.
Grounding Electrode - answer:-Object establishing direct connection to earth.
Grounding Electrode Conductor - answer:-Connects system to grounding electrode.
Separately Derived System - answer:-Electrical source with no direct connections to
others.
Direct Electrical Connection - answer:-Link between two electrical sources.
Examples of Separately Derived Systems - answer:-Generators, batteries, transformers,
solar systems.
Autotransformer - answer:-Transformer with common winding for input/output.
Grounding Requirements - answer:-Rules for grounding separately derived systems.
Section 250.30 - answer:-Grounding requirements for separately derived systems.
Multiple Separately Derived Systems - answer:-Considered a single system when in
parallel.
Grounded Conductor - answer:-Conductor connected to ground for safety.
System Bonding Jumper - answer:-Connects grounded conductor to supply-side
bonding jumper.
Impedance Grounded Neutral Systems - answer:-Must meet specific neutral connection
requirements.
Disconnecting Means - answer:-Device for interrupting electrical supply.
, Grounding and Bonding in Electrical
Systems Questions And Answers.
EGC - answer:-Equipment grounding conductor for safety.
Source Enclosure - answer:-Enclosure housing the electrical source.
First System Overcurrent Device - answer:-Initial device protecting against excessive
current.
Grounding and Bonding Components - answer:-Elements ensuring safety in electrical
systems.
Figure 13-1 - answer:-Illustration of separately derived systems.
Figure 13-2 - answer:-Illustration of autotransformers and their connections.
Figure 13-3 - answer:-Illustration of transformer separately derived systems.
Figure 13-4 - answer:-System bonding jumper installation example.
Figure 13-5 - answer:-Connection of system bonding jumper in enclosure.
Figure 13-6 - answer:-Illustration of bonding jumper connections.
Figure 13-7 - answer:-Connection details for transformer-derived systems.
Overcurrent Device Enclosure - answer:-First enclosure where system bonding jumper
is installed.
Section 250.28(B) - answer:-Regulation detailing system bonding jumper installation.
Derived Phase Conductor - answer:-Conductors connected to output of power source.
Table 250.102(C)(1) - answer:-Used for sizing system bonding jumpers.
12.5% Rule - answer:-Sizing rule for conductors exceeding 1100 kcmil.
Supply-Side Bonding Jumper - answer:-Bonding jumper on supply side of overcurrent
device.
Flexible Metal Conduit - answer:-Wiring method reducing vibration and providing
flexibility.
Systems Questions And Answers.
NEC Terminology - answer:-Terms defining rules for electrical installations.
Bonded - answer:-Connected for electrical continuity and conductivity.
Bonding Jumper, Supply-Side - answer:-Conductor ensuring conductivity on supply
side.
Bonding Jumper, System - answer:-Connects grounded conductor to supply-side
bonding jumper.
Grounded - answer:-Connected to ground or conductive body.
Grounding Electrode - answer:-Object establishing direct connection to earth.
Grounding Electrode Conductor - answer:-Connects system to grounding electrode.
Separately Derived System - answer:-Electrical source with no direct connections to
others.
Direct Electrical Connection - answer:-Link between two electrical sources.
Examples of Separately Derived Systems - answer:-Generators, batteries, transformers,
solar systems.
Autotransformer - answer:-Transformer with common winding for input/output.
Grounding Requirements - answer:-Rules for grounding separately derived systems.
Section 250.30 - answer:-Grounding requirements for separately derived systems.
Multiple Separately Derived Systems - answer:-Considered a single system when in
parallel.
Grounded Conductor - answer:-Conductor connected to ground for safety.
System Bonding Jumper - answer:-Connects grounded conductor to supply-side
bonding jumper.
Impedance Grounded Neutral Systems - answer:-Must meet specific neutral connection
requirements.
Disconnecting Means - answer:-Device for interrupting electrical supply.
, Grounding and Bonding in Electrical
Systems Questions And Answers.
EGC - answer:-Equipment grounding conductor for safety.
Source Enclosure - answer:-Enclosure housing the electrical source.
First System Overcurrent Device - answer:-Initial device protecting against excessive
current.
Grounding and Bonding Components - answer:-Elements ensuring safety in electrical
systems.
Figure 13-1 - answer:-Illustration of separately derived systems.
Figure 13-2 - answer:-Illustration of autotransformers and their connections.
Figure 13-3 - answer:-Illustration of transformer separately derived systems.
Figure 13-4 - answer:-System bonding jumper installation example.
Figure 13-5 - answer:-Connection of system bonding jumper in enclosure.
Figure 13-6 - answer:-Illustration of bonding jumper connections.
Figure 13-7 - answer:-Connection details for transformer-derived systems.
Overcurrent Device Enclosure - answer:-First enclosure where system bonding jumper
is installed.
Section 250.28(B) - answer:-Regulation detailing system bonding jumper installation.
Derived Phase Conductor - answer:-Conductors connected to output of power source.
Table 250.102(C)(1) - answer:-Used for sizing system bonding jumpers.
12.5% Rule - answer:-Sizing rule for conductors exceeding 1100 kcmil.
Supply-Side Bonding Jumper - answer:-Bonding jumper on supply side of overcurrent
device.
Flexible Metal Conduit - answer:-Wiring method reducing vibration and providing
flexibility.
