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Q: What tools do you use most often in your electrical work?
A: I use pliers, screwdrivers, wire strippers, testers, and drills. For safety checks, I rely on a multimeter and voltage tester. -
Q: How do you test if a circuit is live before working on it?
A: I always use a voltage tester or multimeter to check. I never assume a circuit is off until I confirm it. -
Q: What is the difference between single-phase and three-phase power?
A: Single-phase is usually used in homes, while three-phase is common in industries. Three-phase delivers more power and is more efficient. -
Q: What size of wire would you use for a 32A circuit?
A: Normally, 6mm² copper wire is used for a 32A circuit, but it depends on installation method and local codes. -
Q: How do you read an electrical drawing or schematic?
A: I check the symbols, wiring paths, and connections step by step. I follow the circuit flow from the source to the load. -
Q: What do you do if a breaker keeps tripping?
A: First, I check if the circuit is overloaded. If not, I inspect for short circuits, ground faults, or faulty devices. -
Q: What type of PPE (Personal Protective Equipment) do you use?
A: Insulated gloves, safety shoes, helmet, and eye protection. I also use arc-flash clothing when necessary. -
Q: How do you join two electrical wires safely?
A: I strip the insulation, twist the wires properly, and secure them with a connector or terminal block. Then I insulate with tape or heat-shrink. -
Q: What is the main color code for neutral and earth wires?
A: Neutral is usually blue, and earth (ground) is green/yellow in most modern standards. -
Q: How do you install a socket outlet safely?
A: I turn off power, check with a tester, connect live, neutral, and earth properly, and fix the socket securely before switching back on.
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Q: How do you calculate the load of a circuit?
A: I add up the wattage of all devices connected and divide by the voltage to find current. Then I ensure the cable and breaker rating can handle it. -
Q: What steps do you take to prevent electrical fires?
A: Proper load calculation, tight connections, correct cable sizing, and regular inspections. I also use correct fuses and breakers. -
Q: How do you troubleshoot when lights are flickering in a building?
A: I check loose connections, damaged wiring, faulty switches, or overloading. I also check voltage supply stability. -
Q: What is an RCD and why is it important?
A: An RCD (Residual Current Device) protects against electric shock by cutting off power if leakage is detected. It’s essential for safety. -
Q: What precautions do you take when working at heights?
A: I use safety harnesses, stable ladders, and insulated tools. I also avoid carrying heavy loads while climbing. -
Q: How do you ensure compliance with Cyprus or EU electrical regulations?
A: I follow IEC standards, Cyprus Electrical Code, and safety rules. I also check updates and manufacturer guidelines. -
Q: How would you wire a three-phase motor?
A: I connect the three phases (L1, L2, L3) to the motor terminals. Depending on supply and motor type, I use star or delta connection. -
Q: What is the difference between MCB and MCCB?
A: MCBs are for small loads (residential/commercial), while MCCBs handle higher currents with adjustable settings, used in industries. -
Q: How do you locate a hidden fault in underground wiring?
A: I use fault locators, megger testing, or TDR equipment. Sometimes insulation resistance tests help identify the fault area. -
Q: If you find a dangerous electrical fault at work, what do you do first?
A: I immediately disconnect the supply, secure the area, and report it. Safety always comes first before repair.
