Installation Practices and Wiring Flashcards
7 cards from real CAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Installation Practices and Wiring flashcards as text
What minimum bend radius is recommended for professional audio cable in a permanent commercial installation?
Answer: 10 times the cable outer diameter
A minimum bend radius of 10 times the cable outer diameter is recommended for permanent installations to prevent damage to conductors and shield integrity.
When terminating wire into a Phoenix/Euroblock connector for a commercial audio installation, what is the recommended wire strip length?
Answer: 5–7 mm
A 5–7 mm strip length matches the contact depth of most Euroblock connectors, ensuring solid contact without leaving exposed conductors that could cause shorts.
What is the required cable labeling practice for commercial audio installations to meet professional standards?
Answer: Permanent, durable labels at both ends and at all access/junction points
Permanent, durable labels at both ends and all access points are required so that any technician can identify cables quickly during maintenance, years after installation.
Why is plenum-rated cable required in certain areas of a commercial building?
Answer: It produces reduced smoke and toxic fumes when burning, as required in HVAC air-handling spaces
Plenum-rated cable uses low-smoke, low-toxicity materials to comply with fire codes in air-handling spaces (plenums) where fumes could be distributed throughout a building.
Which ANSI/TIA standard governs structured cabling infrastructure in commercial buildings, including audio/video cable pathways?
Answer: ANSI/TIA-568
ANSI/TIA-568 is the primary standard for commercial building telecommunications cabling, covering cable types, pathways, and termination practices applicable to AV installations.
What is the generally recommended maximum length for an unbalanced audio connection in a commercial installation without a line driver?
Answer: 15 feet
Unbalanced connections are susceptible to noise pickup and are generally recommended only up to about 15 feet; beyond that, a line driver or balanced connection should be used.
When rack-mounting power amplifiers, what is the minimum recommended clearance above each amplifier for thermal management?
Answer: 1U of open space for ventilation
At least 1U of open ventilation space above power amplifiers is typically required to allow convective airflow and prevent thermal shutdown or premature component failure.