NAEC CAT common mistakes
NAEC CAT · Understand the traps and how to avoid them.
Treating the CAT as a general elevator-industry knowledge test and studying only mechanics, ignoring the code-administration and inspection-procedure content that makes up much of the exam.
Candidates come from field roles (mechanic, adjuster, constructor) where day-to-day work rewards equipment knowledge, so they default to what feels familiar and skip the governance material they rarely use on the job.
What to do instead
Build a study plan directly from the published CAT content outline and allocate time per domain in proportion to its weighting. For each domain, list the specific tasks (e.g., plan a periodic inspection, document a code violation, evaluate a maintenance-control program) and confirm you can perform each one before moving on.
Confusing the roles of the three credentials - CET, CAT, and QEI - and answering questions as if the CAT holder performs the same functions as a QEI or a CET.
The three programs overlap in subject matter but differ in scope and authority, and candidates who have worked alongside holders of another credential assume the duties transfer.
What to do instead
Write a one-page comparison of the three credentials covering who administers each, what work each authorizes, and where each sits relative to code enforcement and inspection authority in a jurisdiction. Review it before every practice set so role-boundary questions become automatic.
Answering code questions from memory of a local amendment or an employer's practice instead of from the model code text the exam is based on.
Experienced candidates have internalized the version of the code enforced in their own jurisdiction, including local amendments, and read exam questions through that lens.
What to do instead
Study from the specific model code edition and referenced standards named in the exam materials, and when you encounter a requirement you 'know,' look it up and confirm the exact wording. Flag any rule you learned as a local amendment and relearn the base requirement separately.
Recalling a code requirement approximately - the right idea but the wrong threshold, dimension, or clearance - and selecting the answer that 'sounds correct.'
Codes are full of similar-sounding numeric requirements (clearances, loads, tolerances, time intervals), and candidates memorize concepts rather than exact values, so plausible distractors win.
What to do instead
Build a personal table of every numeric requirement you encounter (clearance values, load ratings, inspection intervals, test durations) with the code section beside each. Drill the table until you can state each value and its section without hesitation, then practice distinguishing near-miss distractors.
Skipping the referenced standards and only reading the primary code document, then failing questions that turn on a requirement imported from a referenced standard.
Candidates budget time for the main code and treat the incorporated standards as optional background, not realizing the exam tests requirements that only appear in the referenced documents.
What to do instead
Identify every standard the primary code incorporates by reference and confirm which ones the exam outline names. Read the scoped sections of each and note requirements that differ from or add to the primary code, since those are exactly the points exam writers use to separate careful readers.
Applying inspection or maintenance criteria from the wrong edition or the wrong document class - for example, judging an existing installation against new-installation requirements.
Candidates learn one set of requirements well and apply it universally, missing that codes distinguish new installations, alterations, and existing installations, and that maintenance and inspection standards are separate documents from the installation code.
What to do instead
For each requirement you study, record which document and which class of equipment it applies to. Practice classifying scenarios first ('is this a new installation, an alteration, or an existing unit under maintenance?') before selecting the governing requirement.
On scenario questions, choosing the answer that reflects what a competent mechanic would do rather than what the inspector or certifying authority is required to document, report, or enforce.
Most candidates have operational backgrounds, so they optimize for fixing the problem instead of following the inspection and reporting sequence the credential actually governs.
What to do instead
For scenario items, identify the role you are being asked to play and the decision point: observe, classify, document, notify, or enforce. Practice writing out the correct procedural sequence for common situations (hazard finding, non-compliance, follow-up) so the procedural answer beats the practical one.
Misreading the stem - answering the question asked in the negative ('which is NOT required') or the 'best' answer when a technically true but incomplete option is present, and moving on without re-reading.
Time pressure and long, code-style stems push candidates to pattern-match a familiar phrase and select the first option that matches it.
What to do instead
Underline or mentally restate the operative words in every stem (NOT, EXCEPT, best, minimum, first) before reading the options. For 'best' items, eliminate every option that is true but incomplete or true only in some cases, and confirm the surviving option answers the exact question asked.
Guessing on items about administration, recordkeeping, or program requirements because they feel like 'soft' content, rather than reasoning them out from the purpose of the requirement.
Candidates deprioritize non-technical material in study and then lack any framework to reason from when it appears on the exam.
What to do instead
Study administrative requirements as deliberately as technical ones: who must be notified, what must be recorded, how long records are kept, and what triggers a re-inspection. When unsure, reason from the requirement's purpose (public safety, traceability, accountability) and choose the option that best serves it.
Spending disproportionate time on a small number of hard calculation or code-lookup items and rushing the remaining questions, leaving easy items unanswered or misread.
Candidates treat every item as equally costly and refuse to let go of a difficult one, which compounds under a fixed time limit.
What to do instead
Adopt a strict per-item time budget, mark and skip any item that exceeds it, and return only after all answerable items are complete. Practice full-length timed sets so the pacing decision is rehearsed, and never leave an item blank if there is no penalty for guessing.