Combination Designation: Conflicting Trades on One Project
You hold a combination designation covering building, plumbing, mechanical, and electrical. On a small commercial tenant improvement, you find three issues on the same visit: (1) the electrical panel has a double-tapped breaker feeding a new circuit; (2) the mechanical unit is installed with a condensate drain that terminates in a location that could cause damage; and (3) the plumbing vent terminates too close to a operable window. The electrical subcontractor says the double-tap is 'fine because the breaker is listed for two conductors,' but the panel label does not confirm it. The general contractor asks you to write only the mechanical and plumbing corrections and 'leave the electrical to the electrical inspector' to avoid delaying the electrical rough-in sign-off.
1. How should you handle the request to omit the electrical deficiency?
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You must document all deficiencies you observe within your designated scope. A combination designation authorizes you to inspect all four trades; declining to write a valid electrical correction because it is inconvenient would be a failure of the inspection. The double-tapped breaker is a legitimate finding unless the breaker and panel labeling confirm that two conductors are permitted. Write the correction, cite the applicable requirement, and let the electrical contractor provide documentation if the breaker is listed for two conductors. The judgment point is that scope of authority carries an obligation to report, not an option to defer for scheduling reasons.
2. How do you resolve the double-tap question factually?
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Require documentation: the breaker's listing and marking, and the panel's labeling, must show that two conductors are permitted. Absent that confirmation, the double-tap is a deficiency and must be corrected. Do not accept the subcontractor's verbal assurance. The judgment point is that 'listed for two conductors' is a verifiable claim, and the inspector's role is to require the evidence rather than accept the assertion.
3. What is the correct approach to the mechanical and plumbing findings?
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Write both as corrections with specific code references and required remedies: relocate or redirect the condensate drain termination to prevent damage, and relocate the vent termination to the required distance from the operable window. Document the locations and conditions observed. Then coordinate reinspection of all three trades. The judgment point is that each trade finding stands on its own and must be corrected before the respective sign-off, regardless of the contractor's scheduling preferences.