These are five sample questions from Bryq’s Electricians assessment, a job-specific test for hiring residential, commercial, and industrial electricians. The full assessment covers five skills: wiring, troubleshooting, electrical maintenance, worksite safety, and blueprint reading. Questions combine technical knowledge and code requirements with realistic job-site scenarios, each with four options to choose from.
Wiring
Question
Why must the neutral and ground conductors be kept separate in a subpanel?
Select your answer
To keep normal neutral current off grounding paths and metal parts.
To increase the subpanel’s available amperage capacity.
To allow the subpanel to operate without a main breaker.
To reduce voltage drop on the feeder conductors.
WHY IS THIS THE CORECT ANSWER
Neutral and ground are bonded only at the service equipment. Bonding them again in a subpanel creates parallel paths, so normal neutral current flows on ground wires, conduit, and enclosures. This can energize metal parts and undermine fault protection.
Troubleshooting
Question
A 120V receptacle reads 120V hot-to-neutral with nothing plugged in, but drops to 95V when a space heater is connected. What is the most likely cause?
Select your answer
A high-resistance connection somewhere on the circuit.
Reversed polarity at the receptacle.
A GFCI device tripping upstream.
A breaker sized too large for the circuit.
WHY IS THIS THE CORECT ANSWER
A circuit that shows full voltage with no load but sags heavily under load has resistance in series with it, usually from a loose, corroded, or backstabbed connection. That resistance only shows up once current flows, which is why the no-load reading looks normal.
Electrical Maintenance
Question
Why are insulation resistance (megger) test results on a motor tracked over time, rather than judged on a single reading?
Select your answer
Because a falling trend reveals insulation breaking down before it fails.
Because the reading changes with the motor’s load current.
Because code requires an average of several readings.
Because a single reading is only valid on new motors.
WHY IS THIS THE CORECT ANSWER
Acceptable insulation resistance varies with the equipment, temperature, and humidity, so one reading means little on its own. Comparing results over time, corrected for temperature, shows whether the insulation is deteriorating, so the motor can be repaired before it fails.
Worksite Safety
Question
You return from a break during a motor repair and find that your lock and tag have been removed from the disconnect. What should you do?
Select your answer
Treat it as energized, find out who removed the lock, and repeat lockout and testing.
Continue the repair, since the disconnect handle is still in the off position.
Check the disconnect is still off, reapply your lock, and continue the repair.
Reapply your lock and tag, test for absence of voltage, and continue the repair.
WHY IS THIS THE CORECT ANSWER
A removed lock means the lockout can no longer be trusted: the equipment may have been re-energized, or someone else may act on it again. Treating the circuit as live, finding out what happened, and repeating the full lockout and verification restores protection. Simply relocking, or relying on the handle position, leaves the breach unexplained.
Blueprint Reading
Question
On an electrical floor plan, a receptacle symbol marked “GFCI” and “WP” indicates:
Select your answer
A weatherproof, GFCI-protected receptacle.
A GFCI receptacle fed from a separate wiring panel.
A ground-fault receptacle mounted at wall-plate height.
A GFCI receptacle on a dedicated workshop circuit.
