Short answer: Read a test result as an answer to a specific question, not as a verdict on the whole installation. Record the instrument, test points, equipment state, reading and units. Review the note with the qualified person directing the test and follow your employer’s procedure.
Starting your first year as a Texas apprentice? The US$19 Texas First-Year Electrical Apprentice Kit gives you printable pages for the first months on the job: a tool-check card, a who-to-ask list with a short stop-and-ask script, emergency-contact and heat-and-rest cards, plus a Tool budget sheet and a Tool inventory sheet (CSV).
Log your Texas Journeyman hours free. A free Tsai Electro account keeps your supervised hours, your online practice scores and your exam date in one place. Start with a five-question check to see which topic to practice next.
Tsai Electro is an independent learning site. Not affiliated with TDLR, OSHA, the Department of Labor or any apprenticeship program.
Start with who performed the test
OSHA 1910.334(c), a general industry rule, says only qualified persons may perform testing work on electric circuits or equipment. It also requires test instruments, leads, cables, cords, probes and connectors to be visually inspected for external defects and damage before use. Instruments and accessories must be rated for the circuits and equipment and designed for the environment.
Those rules set a clear boundary for reading results. Do not copy a qualified person’s test steps from a page and try them yourself. Watch, record and ask what the result addresses under your employer’s required training and procedures.
The sequence for diagnosing a fault belongs on the electrical troubleshooting process page. This page stays with the meaning and recording of a result.
Three result types you may hear about
Continuity
OSHA’s assured equipment grounding conductor program page says its continuity test checks whether the equipment grounding conductor is electrically continuous. The construction rule also requires receptacles and attachment plugs in that program to be tested for correct attachment of the equipment grounding conductor.
A continuity result answers that stated question. It does not establish the condition of parts the test did not address. In your note, name the cord, receptacle or equipment, the test point, and the result reported by the person who performed the test.
Voltage presence and deenergized verification
OSHA 1910.333 says a qualified person uses test equipment on circuit elements and exposed electrical parts to verify they are deenergized. The test also checks for an energized condition caused by induced voltage or unrelated voltage backfeed.
Write exactly what the qualified person reports. Include where the test was made, the instrument used, the indicated value with units, and the equipment state described at that moment. A note that says only “no voltage” leaves out the test points, instrument and conditions.
Insulation resistance
An archived OSHA field service memo says a megohmmeter measures insulation resistance and other high resistances. The memo also says the instrument uses a higher supply voltage than the ohmmeter part of a multimeter.
Treat that memo as background about the measurement, not as a testing procedure. Record the result and units given by the qualified person. Ask what equipment state, test points and employer acceptance criteria apply to the reading.
Keep observation separate from interpretation
A useful note separates what appeared on the instrument from what the responsible person decided. Use two lines:
- Observed: instrument, mode or test type, test points, equipment state, value and units.
- Reviewed: name or role of the person who reviewed it, their interpretation, and the follow-up they directed.
For an assured equipment grounding conductor program, OSHA requires records that identify each receptacle, cord set and cord connected item that passed, plus its last test date or test interval. Follow the employer’s recordkeeping method. Your study note does not replace the employer’s required record.
Check a test note
Check a test note before review
Check what the note contains. This checks documentation fields. It does not verify the test, the equipment, your qualification or electrical safety.
- The instrument is identified
- The test type or mode is identified
- The exact test points are written
- The equipment state is written
- The displayed value is copied
- The unit is copied
- The person who performed the test is identified
- The qualified reviewer is identified
- The reviewer’s interpretation is written
- The directed follow-up is written
Practice the calculations used in journeyman exam questions. The Texas Journeyman Electrician Exam Practice Pack includes 1,000 practice questions and step by step solutions for calculations. It does not train you to use test instruments on site. Required training and supervision come from your employer.
Can an apprentice perform electrical testing?
OSHA 1910.334(c), a general industry rule, says only qualified persons may perform testing work on electric circuits or equipment. Follow your employer’s qualification, training and authorization requirements.
Does a continuity result prove the equipment is safe?
The OSHA assured grounding program continuity test addresses whether the equipment grounding conductor is electrically continuous. The result does not address conditions outside that test.
What belongs in a reading note?
Identify the instrument, test type, test points, equipment state, displayed value and units. Add who performed the test, who reviewed it, the interpretation and the directed follow-up.
