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Electrical Foreman Communication and Estimating Basics: Pre-Task Briefs, Takeoffs, Labor Hours and Variance, With Worked Examples

Updated About 5 min read

Short answer: A foreman needs two skills. Communication: a short pre-task brief covering scope, hazards, who is qualified for what, and when to stop. Estimating: count devices and measure runs from the plans, apply labor units to get hours, divide by the crew to get days, then compare actual hours with the estimate and record why they differ.

Foreman is a job title, not a Texas license. Your license class, not the title, sets the electrical work you may do and supervise. The Texas Journeyman Practice Pack has 1,000 practice questions on the 2026 NEC, step-by-step solutions for 299 calculation questions, and 10 timed two-part mocks that score you by topic area. US$39 once.

Tsai Electro is an independent learning site. Not affiliated with TDLR or PSI. The labor units below are illustrative teaching numbers, not a published standard. Contractors use their own job history or a commercial labor-unit manual.

Foreman is a job, not a license

TDLR does not issue a foreman license. A foreman is a role your employer gives you inside the license structure: apprentices work under the general supervision of a Master Electrician, Journeyman Electrician or Residential Wireman (TDLR apprentice page), and the licenses you hold set what you may supervise. The next license up from Journeyman is Master Electrician, which needs a Journeyman license held for at least two years and 12,000 hours of on-the-job training under a Texas Master (TDLR Master application page).

The pre-task brief

A good brief takes five to ten minutes at the start of the shift or the task. OSHA’s construction rules require employers to instruct each worker in recognizing and avoiding unsafe conditions on the job (OSHA 1926.21). The brief is where that becomes specific.

ItemWhat to sayExample
ScopeWhat we are doing today and wherePull feeders from MDP to panels 2A and 2B, level 2
HazardsWhat can hurt usMDP is energized; lift work at 14 feet; other trades below
Energy controlWho locks out what, and how we verifyBreaker 14 isolated under the employer lockout/tagout procedure; absence of voltage verified by a qualified person before work
Who does whatMatch people to tasks they are qualified forJourneyman terminates; apprentices pull and label
Materials and toolsWhat must be on handPull rope, lube, cart, labels, lift inspection done
Hold pointsWhat waits for someone elseNo energizing until the foreman checks terminations and torque
Stop workAnyone may stop the job if something is unsafeSay it out loud every brief

End by asking each person to repeat their task. If someone cannot, the brief is not finished.

Worked example 1: takeoff to labor hours

A small tenant space. The takeoff from the plans:

ItemCountLabor unit (hours each, illustrative)Hours
Duplex receptacles, rough and trim360.6021.6
Single-pole switches, rough and trim140.557.7
Recessed light fixtures220.8017.6
Cable, 12/2 MC, per foot1,4500.0114.5
  1. Receptacles: 36 × 0.60 = 21.6 hours.
  2. Switches: 14 × 0.55 = 7.7 hours.
  3. Fixtures: 22 × 0.80 = 17.6 hours.
  4. Cable: 1,450 × 0.01 = 14.5 hours.
  5. Subtotal for the four listed work items: 21.6 + 7.7 + 17.6 + 14.5 = 61.4 labor hours. This teaching estimate leaves out other required tasks, supervision, testing, mobilization and job-specific allowances.
  6. Crew of 2 working 8-hour days: 61.4 ÷ 16 = 3.84 crew days, so plan about 4 days for these items before adding other tasks, delays and scheduling allowances.

Check: add in another order. 14.5 + 17.6 = 32.1, plus 7.7 = 39.8, plus 21.6 = 61.4. Same total.

Worked example 2: cable quantity

The takeoff shows 1,450 feet of 12/2 cable. Add 10% for waste and makeup, and order in 250-foot coils.

  1. 1,450 × 1.10 = 1,595 feet.
  2. 1,595 ÷ 250 = 6.38 coils.
  3. Round up: 7 coils (1,750 feet).

Check: 6 coils = 1,500 feet, which is less than 1,595. 7 coils = 1,750 feet, which covers it.

Worked example 3: variance

The job finished with 70.0 actual labor hours against the 61.4-hour estimate.

  1. Variance in hours: 70.0 − 61.4 = 8.6 hours over.
  2. Variance in percent: 8.6 ÷ 61.4 = 0.1401, or 14.0% over.
  3. Record the cause: for example, ceiling grid installed before the fixtures were roughed in, so 14 fixtures were installed through the grid.

Check: 61.4 × 1.14 = 70.0 (69.996). Same actual hours.

The number is only useful with the cause next to it. A variance log with causes is what makes the next estimate better.

Communicating up and out

  • To the general contractor: conflicts and delays in writing, the same day, with location and drawing numbers.
  • To the office: daily hours by task code, so the variance can be tracked while the job is still running.
  • To the crew: what changed since yesterday and why.
  • To the inspector: have the plans, the permit and the person who did the work ready at inspection time.

Check yourself

Our own practice questions. Answers below each.

  1. 48 receptacles at 0.60 hours each. Labor hours? Answer: 48 × 0.60 = 28.8 hours.
  2. 120 estimated hours, crew of 3 on 8-hour days. Crew days? Answer: 120 ÷ 24 = 5 days.
  3. Estimate 80 hours, actual 72. Variance? Answer: 72 − 80 = −8 hours, −10%, under estimate.

Looking ahead to the Master license? The Texas Master Practice Pack has 368 practice questions and 10 timed two-part mocks, US$79 once.

FAQ

Do you need a license to be an electrical foreman in Texas?

TDLR does not issue a foreman license. Foreman is an employer role. What you may do and supervise depends on the electrician license you hold and on supervision under a Master Electrician.

What is a labor unit in electrical estimating?

The number of labor hours assigned to install one unit of an item, such as a receptacle or 100 feet of conduit. Contractors take labor units from their own job history or from a published labor-unit manual and adjust them for job conditions.

How do you calculate labor variance?

Subtract the estimated hours from the actual hours, then divide by the estimated hours. A positive result means the job took longer than estimated. Record the cause with every variance.

What should a pre-task safety brief cover?

The scope of work, the hazards, how energy will be controlled and verified, who does each task, needed materials and tools, hold points, and everyone’s right to stop work if something is unsafe.

Next step: take a Journeyman mock while you build your hours. The Texas Journeyman Practice Pack mocks follow the scored topic weights in the PSI outline. Each one gives you a score for both parts and a score for each topic area, so you can see where to practice next. Practice scores are not official PSI results. 1,000 questions, 10 mocks, US$39 once, no subscription.

Next skill: the foreman and estimator branch. See where lead roles go next: management career paths for electricians.

Sources checked October 2026

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Not a licensed Professional Engineer in Texas or any U.S. state. Does not offer engineering services. Exam-prep education only.