Grade 10 electricity – Equipment at Consumers Intake Point Quiz

The electricity meter records the energy consumed so the utility can bill the customer. The main switch isolates supply, the earth electrode provides grounding, and the distribution board distributes circuits.

The main switch allows the entire electrical supply to be turned off for safety or maintenance. It does not measure energy, provide earthing, or change voltage.

An MCB trips to protect against overloads and short circuits and can be reset. An earthing conductor provides a safety path, the meter measures energy, and the service head connects the supply.

The earth electrode connects the installation to the ground so fault currents can safely dissipate. It does not measure current, switch supply, or affect power factor.

An RCD senses imbalance between live and neutral and trips to prevent electric shock. The distribution board distributes circuits, the service fuse protects equipment, and the meter measures consumption.

An isolator gives a visible disconnection so workers know the supply is off before working. It does not measure energy, ground neutral, or automatically restore supply.

Meters are usually mounted outside near the intake for easy reading and access by the utility. Inside cabinets, underground or on the roof would make access difficult and are unsafe.

The service fuse protects the incoming supply cable and prevents damage from very large faults. It does not measure voltage, provide earthing, or regulate frequency.

Correct neutral connection is essential for safe operation and to avoid stray voltages. It does not affect brightness directly, replace earthing, or cool wiring.

Bonding links exposed conductive parts and pipes so they are at the same potential, reducing shock risk. It doesn't increase current capacity, measure energy, or disconnect neutral from earth.

A meter bypass circumvents the meter so consumption isn't recorded; this is theft and unsafe. Main switch, distribution board, and inspection cover are legitimate components.

Surge arresters divert dangerous high-voltage transients away from equipment. They do not regulate normal supply, directly fix grounding faults, or relate to batteries.

The meter box houses and secures the meter and service connections, often locked to prevent tampering. RCD, switches, and sockets are different devices.

TT systems use a local earth electrode at the consumer, whereas other terms listed aren’t earthing arrangements used to describe consumer local earths.

Utility seals deter and show evidence of tampering which would affect billing. Seals do not change accuracy inherently, stop supply, or ground neutral.

Green-and-yellow is the standard colour for protective earth conductors in many wiring codes, making earth conductors easily identifiable. Blue, black, and brown are used for other conductors.

Safe practice requires isolating the supply and confirming no voltage before work. Increasing voltage, removing earth, or bypassing the meter are dangerous and wrong.

Inspection boxes let authorized personnel view and access service connections while preserving seals. They do not measure current, provide backup power, or act as earth stakes.

HRC fuses melt and must be replaced after a heavy fault. RCDs and MCBs can often be reset, and indicator lamps only show status.

A sufficiently large earth conductor prevents overheating and voltage rise during faults. It does not increase supply voltage, measure leakage, or affect meter speed.

A neutral terminal gathers neutral conductors safely. It is not for earth connection to the meter, not a switch, and does not change phase voltages.

After the meter, equipment belongs to and is maintained by the consumer. The utility is responsible up to their meter and service point; meter readers and manufacturers have different roles.

Clear labels showing where to isolate supply help in emergencies. Other information listed is not helpful for safety or emergency response.

Broken seals or damaged meter boxes may indicate tampering or safety hazards and should be reported. Tampering, bypassing, or removing the meter is illegal and dangerous.

Proper support protects cables from strain and damage that could cause faults. While neatness is a side benefit, support does not change voltage rating or bills.

Individual circuit breakers isolate single circuits for work while keeping others powered. The service fuse protects the main supply, the meter measures energy, and the earth electrode provides grounding.