QUESTIONS AND ANSWERS 100% PASS
2026 EDITION
Can you describe the function of an electrical print? - ANS an electrical print is a
representation of an electrical system that shows how components are connected and
sometimes where they are physically located.
can you explain the cross-reference symbols and notes on an electrical print? - ANS ladder
diagrams use a numerical cross-referencing system to indicate the location and type of contacts
controlled by a relay or contactor's output coil.
cross-referencing is useful for quickly locating the contacts that are controlled by an output coil
when a machine print has several pages.
do you know how to interpret an electrical print? - ANS 1. start at the upper left
2. read first line
3. read remaining lines
can you describe the function of an electrical panel? - ANS 1. to protect workers from
accidental contact with electrical components.
2. to protect the panel's components from harmful atmospheric and environmental conditions.
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, can you explain how to arrange panel wiring to terminal blocks? - ANS 1. internal wiring
connects to terminal block inside the panel.
2. external wiring connects to terminal block outside the panel.
3. no wires cross over the terminal block.
4. no more than 2 wires per terminal.
5. no spliced wires between terminal blocks.
do you know how to size and install electrical terminal blocks? - ANS large terminals are used
for motor power leads because of the high current demand. mid-sized blocks are used in control
wiring applications
3 steps to install:
1. Install DIN rail.
2. secure the terminal block by snapping them onto the DIN rail.
3. install end anchors to keep the terminal block from slipping.
do you know how to determine wire colors for control panel wiring? - ANS Black:
Ungrounded AC power conductors.
Red: AC control circuit.
Blue: DC control circuit.
Orange: interlock control circuits from an external power source.
Green: Equipment grounding conductor.
White: Grounded circuit conductor, DC common.
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