Definitions, Theory & Plans — Texas Journeyman Practice Questions

6 questions · 5% of the NEC Knowledge exam

Worked questions

1. A disconnect is behind a locked electrical-room door, and only authorized personnel have the key. Is the disconnect necessarily disqualified from being readily accessible?

ANo; because accessibility rules never apply to disconnects
BYes; every disconnect must be reachable by the public
CYes; any door makes equipment inaccessible
No; authorized access can still be readily accessible

Why D is correct

Readily accessible means reachable quickly without climbing over obstacles or using portable ladders. Controlled access for qualified or authorized personnel does not by itself defeat the definition; the actual route and access conditions still matter.

2. A load is expected to operate at maximum current for three hours or more. How is it classified for NEC load calculations?

As a continuous load
BAs a noncoincident load
CAs a motor load regardless of equipment type
DAs an intermittent load

Why A is correct

The NEC definition turns on duration at maximum current: three hours or more is continuous. That classification triggers applicable 125-percent sizing rules; it does not convert the equipment into a motor or prove loads are noncoincident.

3. Conductors run from service equipment to a downstream panel whose breakers supply final loads. How is that run classified?

AAs a service drop
As a feeder
CAs utilization equipment
DAs a branch circuit

Why B is correct

A feeder carries power from service or other supply equipment to the final branch-circuit overcurrent devices. The circuits leaving those final devices are branch circuits, so the panel location in the distribution path controls the classification.

4. A disconnect is behind a locked electrical-room door, and authorized personnel carry the key. Which NEC term determines whether it can be reached quickly without climbing or removing obstacles?

AWithin sight
BConcealed
CExternally operable
Readily accessible

Why D is correct

Readily accessible addresses prompt access without climbing over or removing obstacles or using portable ladders. A controlled locked room may still qualify for authorized personnel when access itself remains prompt.

5. A one-line diagram shows 42 kA of available fault current at a new switchboard. Which equipment characteristic must be coordinated with that value?

Its interrupting and short-circuit ratings
BIts branch-circuit count only
CIts normal operating temperature for the NEC term and plan condition described
DIts enclosure paint system

Why A is correct

Equipment intended to interrupt fault current needs adequate interrupting rating, and the assembled equipment must withstand the available fault current. Normal load rating alone does not establish fault suitability.

6. A plan notes that display lighting will operate at maximum current for four hours each business day. How is that load classified?

AAs a temporary load
As a continuous load
CAs an intermittent load
DAs a noncoincident load

Why B is correct

A continuous load is one where maximum current is expected to continue for three hours or more. The four-hour operating period meets that definition.

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