State, City and County Exams
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Washington DC
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Districtwide Classifications

 

Electrical

220

Master Electrician

307

Journeyman Electrician

309

Low Voltage Electrician

338

Journeyman Sign Electrician

824

Residential Maintenance Electrician

 
 

Plumbing

300

Master Gas Pipe Fitter

301

Journeyman Gas Pipe Fitter

302

Journeyman Plumber

303

Master Plumber

304

Master Plumber with Gas

310

Journeyman Plumber with Gas

 
 

Mechanical

311
312

Master/Journeyman AC and Refrigeration Mechanical

313

First Class Stationary Boilers

314

Second Class Stationary Boilers

322

Master Refrigeration and Air Conditioning Mechanic Limited

323

Third Class Stationary Boilers

335

Sixth Class Stationary Boilers

 

Additional Notes

999 Numbered trade codes refer to ICC exam codes.

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