CITB Electrical and Mechanical Systems Flashcards
6 cards from real CITB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CITB Electrical and Mechanical Systems flashcards as text
What type of fire extinguisher should NOT be used on an electrical fire on a construction site?
Answer: Water extinguisher
Water conducts electricity and must never be used on live electrical fires as it creates a serious electrocution risk.
What is the recommended safe approach distance from overhead power lines for construction equipment in the US?
Answer: 10 feet (minimum)
OSHA requires a minimum 10-foot clearance from overhead power lines for equipment up to 50kV, with greater distances for higher voltages.
Which system distributes conditioned air throughout a building under construction?
Answer: HVAC ductwork
HVAC (Heating, Ventilation, and Air Conditioning) ductwork distributes conditioned air for climate control in buildings.
What does PAT testing stand for in the context of site tools and equipment?
Answer: Portable Appliance Testing
Portable Appliance Testing (PAT) is a formal inspection of electrical appliances to ensure they are safe for use on site.
A construction site's temporary power distribution board should be protected by which device to prevent overloads?
Answer: Circuit breakers or fuses
Circuit breakers or fuses protect distribution boards by automatically interrupting the circuit when current exceeds safe levels.
Which mechanical system on a construction site requires a pressure test before commissioning?
Answer: Plumbing and pipework
Plumbing and pipework systems must undergo pressure testing to verify they are leak-free and structurally sound before being put into service.