Safety, Licensing Law, and Business Practices
This domain combines jobsite safety with the DC licensing and business rules that surround electrical work. Expect questions on lockout/tagout, PPE, permits, license classes, contracts, and pricing labor with burden.
Safety
NFPA 70E frames electrically safe work: de-energize, isolate, lock and tag, release stored energy, and verify absence of voltage with a tested meter. Energized work needs justification and a permit; PPE and arc-flash boundaries are last lines of defense. On construction sites, GFCI protection is required for temporary receptacles (NEC 590.6). Test instruments and gloves need the correct rating and inspection.
Licensing law
DC electrician licenses are issued by DLCP through the Board of Industrial Trades: apprentice, journeyman, master. Journeymen work under a master; the master is the qualifying individual who oversees permitted electrical work. The business also needs the applicable DC basic business license. Construction permits and inspections are handled by the DC Department of Buildings; the NEC is enforced through the DC Construction Codes (12A DCMR) with the Electrical Code Supplement. Unlicensed contracting is an enforcement issue, and contracts, change orders, liens, insurance, and consumer-protection duties follow DC law.
Business practice
Price labor with burden-payroll taxes, insurance, benefits, and nonbillable time-not just wage. Track materials, overhead, profit, permits, and contingency separately; put change orders in writing before work.
Worked example
Bid 40 labor hours at $45/h base; labor burden 28%; materials $1,200; overhead and profit 15% applied to labor plus material. Burdened rate = 45 × 1.28 = $57.60/h. Labor = 40 × 57.60 = $2,304. Subtotal = 2,304 + 1,200 = $3,504. Price = 3,504 × 1.15 = $4,029.60. If the bid omits burden, it underrecovers $504.
Traps
- Treating a journeyman license as authority to contract or pull permits.
- Working energized without justification, permit, or PPE.
- Quoting wage only and ignoring labor burden.
- Starting changed work without a written change order.
- Assuming a business license alone covers electrical work without a master qualification.