Installation Techniques Flashcards
7 cards from real AWS 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 Techniques flashcards as text
What minimum clearance should be maintained between a welding power source and the wall behind it for adequate ventilation?
Answer: 6 inches
A minimum of 6 inches of clearance behind the welding power source is required to allow adequate airflow through the machine's cooling system.
During installation, when is it required to use a dedicated, isolated welding return circuit rather than the building's structural steel as the work return?
Answer: When welding on or near sensitive electronic equipment, control systems, or instrumentation
Using structural steel as the welding return near electronic equipment can create stray current paths that damage sensitive instrumentation and control systems.
What does AWS D1.1 require regarding the installation of welding procedure specifications (WPS) at the job site?
Answer: The applicable WPS must be available at the welding location for welder reference
AWS D1.1 requires that the applicable WPS be available at the welding location so welders can verify and follow the required parameters.
When installing a welding fume extraction system, what is the recommended capture velocity at the hood opening?
Answer: 200-500 FPM
ACGIH recommends a capture velocity of 200-500 feet per minute at the hood opening to effectively capture welding fumes before they enter the welder's breathing zone.
A welding transformer is being installed with primary leads. What is the correct sequence for making electrical connections?
Answer: Connect the ground wire first before any other conductors
The equipment grounding conductor must always be connected first to establish fault protection before any energized conductors are connected.
When installing a semi-automatic MIG welding station, what determines the maximum allowable wire feeder distance from the power source?
Answer: The combined voltage drop in the control cable and the wire conduit resistance
Maximum feeder distance is limited by control cable voltage drop affecting feeder performance and wire conduit friction resistance affecting wire feeding consistency.
What installation requirement applies to a welding machine's primary disconnect switch?
Answer: It must be within sight of and readily accessible to the welding equipment
NEC Article 630 requires the disconnecting means for welding equipment to be within sight of and readily accessible to the equipment for rapid de-energization in an emergency.