TN-C-S Earthing System

What does TN-C-S stand for in earthing arrangements?

• Terra-Neutral-Combined-Separated

• Technical-Network-Connection-Service

• Terra-Network-Cable-Satellite

• Terra-Nova-Current-System

What is the common conductor known as in a TNCS system?

• Protective Earth Neutral

• Neutral Power Connector

• Combined Voltage Conductor

• Grounded Energy Conductor

What does PEN stand for?

• Power Earth Neutral

• Protective Earth Neutral

• Potential Energy Network

• Primary Electric Node

What is another name for the PEN conductor?

• Protective Ground Neutral

• Neutral Ground Connector

• Earth Neutral Powerline

• Combined Neutral and Earth

What type of system is known as Protective Multiple Earthing?

• TNC

• TNS

• TN-C-S

• PME

What does PME system use as the earth point?

• The main electrical panel

• A separate grounding rod

• An isolated circuit

• The neutral of the incoming supply

What are the risks associated with an increase in fault current in a PME system?

• Damage to the electrical meter

• Short circuit in the consumer unit

• Overloading of the neutral conductor

• Enhanced fire risk and dangerous potential relative to Earth

What must the neutral conductor not have in a PME system?

• A fuse or other link that can break the neutral path

• An insulating cover

• A color coding

• A connection to the main switch

According to BS 7671, how should the main equipotential bonding conductor be selected?

• According to the length of the conductor

• Based on the maximum load of the installation

• Based on the type of electrical appliances used

• In accordance with the neutral conductor of the supply

What effectively means the distribution system is TNC and the consumer's installation is TNS?

• The combination of TN and CS system

• The separation of neutral and earth conductors

• The use of a PEN conductor

• The installation of a PME system