Final answer:
A Master Plumber with a Certificate of Fitness is limited to working on residential occupancy sprinkler systems with a specific number of heads, which varies by local regulations. For an accurate limit, refer to the local authority having jurisdiction.
Step-by-step explanation:
The subject of the question is related to the field of engineering, more specifically to the plumbing and firefighting sectors within construction engineering. In many jurisdictions, a Master Plumber (MP) with a Certificate of Fitness (COF) is typically restricted in the number of sprinkler heads they can install or maintain in residential properties.
However, the exact number of sprinkler heads allowed can vary depending on local building codes and regulations. It's essential to refer to the local authority having jurisdiction (AHJ) for the specific limit that applies to a Master Plumber with COF in a given area.
For instance, in some locations, a Master Plumber may be allowed to work on systems with 20 sprinkler heads or less in residential occupancies, but this number is not standardized and can vary. Therefore, to provide an accurate response, checking the regulations pertinent to the specific location is necessary.