Final answer:
The maximum length of a clothes dryer exhaust duct is usually 25 feet, subject to reductions for every 90-degree turn as specified by local building codes.
Step-by-step explanation:
The question pertains to the maximum length of a clothes dryer exhaust duct in relation to building codes or construction best practices.
While the question cites a figure related to electric dryers and the cancellation of magnetic fields, the actual length requirement for a dryer duct typically depends on the manufacturer's recommendations and local building codes. Most codes specify a maximum duct length of 25 feet from the dryer to the exterior vent, with reductions in length required for every 90-degree turn the duct makes.
It is important for safety and efficiency that the maximum length is adhered to in order to prevent the buildup of lint, which can be a fire hazard, and to ensure that the dryer operates efficiently.
The maximum length of a clothes dryer exhaust duct should not be greater than 25 feet from the dryer's location to the wall or roof termination. This limit is set to ensure proper airflow and ventilation for the dryer. If the duct is too long, it can lead to reduced efficiency and increased risk of fire due to lint buildup.