Plumbing NC II study guide
Plumbing NC II · Work through your exam, one topic at a time.
Plumbing NC II is a Philippine national certificate under the Technical Education and Skills Development Authority (TESDA) system, awarded to workers who demonstrate the competencies required to install, test, maintain, and repair plumbing systems on residential, commercial, and light industrial projects. It suits plumbing helpers and trainees who want formal recognition of their skills, experienced tradespeople who need a certificate for employment or overseas work, and vocational graduates building a verifiable credential. The Plumbing NC II study guide has 9 sections and about 2,925 words.
01Occupational Health and Safety (OHS) and Housekeeping Procedures
The OHS and housekeeping domain tests how you identify hazards before and during plumbing work, select controls, use PPE, and leave the workplace safe. In the Philippine setting, RA 11058 and the OSH Standards require employers to provide information, training, PPE, and safe systems of work; candidates are expected to apply these ideas to actual plumbing tasks.
396 words, about 2 min02Interpretation of Technical Drawings, Plans, and Specifications
This domain tests your ability to extract dimensions, elevations, pipe sizes, and intent from plans, elevations, sections, isometrics, and riser diagrams. You must read the title block and legend before measuring anything.
348 words, about 2 min03Measurement, Layout, and Marking Out of Plumbing Works
This domain tests accurate setting out: measuring, leveling, squaring, transferring lines, and preparing a cutting list that accounts for fittings and joints. Use a calibrated tape; check the true zero at the hook.
302 words, about 2 min04Selection, Handling, and Preparation of Plumbing Tools, Materials, and Fittings
This domain tests selection, inspection, handling, and preparation. The examiner wants to see that you choose the right tool and material for the pipe, and that you protect both before installation.
331 words, about 2 min05Cutting, Threading, Bending, and Joining of Pipes and Fittings
This domain tests hands-on technique and defect recognition. The exam expects square cuts, correct thread form, controlled bends, and joints that pass a pressure test.
338 words, about 2 min06Installation of Water Supply and Distribution Piping Systems
This domain tests layout, sizing, pressure, valves, supports, and testing of cold and hot water systems. You need to show that water reaches each fixture at adequate pressure without noise or contamination.
293 words, about 1 min07Installation of Sanitary Drainage, Waste, and Vent (DWV) Piping Systems
This domain tests gravity drainage layout, venting, trap protection, cleanouts, and testing. The exam expects you to keep the system self-cleaning and the trap seals intact.
300 words, about 2 min08Installation and Testing of Plumbing Fixtures, Appliances, and Accessories
This domain tests setting out, rough-in, connection, sealing, and testing of water closets, lavatories, sinks, floor drains, and appliances. Correct height and alignment matter as much as a leak-free joint.
325 words, about 2 min09Maintenance, Repair, and Troubleshooting of Plumbing Systems
This domain tests systematic diagnosis, safe repair, and verification. The examiner wants evidence that you isolate the problem, identify the cause, and confirm the repair rather than replacing parts at random.
292 words, about 1 min