Tradesman Plumber-Limited Asked to Do Work Outside the License
You hold a Tradesman Plumber-Limited license and work for a residential service company. Your dispatcher sends you to a small commercial building to replace a failed backflow assembly on the domestic water service and to install a new gas line to a rooftop unit. Your license limits you to one- and two-family dwellings. The dispatcher says the company's master license 'covers' you and to just do it because the customer is waiting and the master is out of town. You arrive and the building has a 2-inch service, a reduced-pressure-zone assembly, and a gas meter with an existing 1-inch line.
1. Can you perform this work under your Tradesman Plumber-Limited license? What do you do?
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No. A Tradesman Plumber-Limited license is limited to one- and two-family dwellings; a small commercial building is outside that scope. The company's master license does not expand your personal license scope.
What to do:
- Do not begin the backflow replacement or gas line installation.
- Contact the dispatcher and explain the scope limit in writing.
- Ask that a qualifying master or journeyman with the appropriate scope be dispatched, or reschedule.
- Document the refusal and the reason.
Performing commercial work on a limited license is a licensing violation even if the company holds a master license, and it exposes you and the company to discipline and inspection failure.
2. If a qualifying licensee is dispatched, what must be verified before the backflow assembly is placed back in service?
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Before return to service:
- The replacement RPZ assembly must be the correct size and approved model for a 2-inch service.
- Installation must follow the manufacturer's orientation and clearance requirements and code-required protection.
- It must be tested by a certified backflow tester and the test report submitted to the water authority.
- Confirm the assembly is on the approved list and that the device and test are documented.
A backflow assembly is not 'done' when it is installed; it is done when it passes testing and is documented. The tester certification and reporting are part of the compliance chain.
3. What are the risks of following the dispatcher's instruction, and how do you protect yourself?
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Risks:
- Licensing discipline for working outside the limited license.
- Failed inspection and required rework.
- Liability if the backflow protection or gas line fails.
- Personal exposure even though 'the company' told you to proceed.
Protection:
- Written refusal/notification to the dispatcher and supervisor stating the scope limit.
- No work performed outside scope; leave the site if pressured.
- Keep copies of communications.
- Request reassignment to a qualifying licensee.
A verbal instruction from a dispatcher does not override license scope; the paper trail is your defense.