On average, a single fusion splice can take anywhere from 10 to 30 minutes, including preparation and testing. The answer isn't always straightforward, as it depends on various factors, including the type of fiber, the splicing method, and the level of expertise of the technician. Fiber splicing involves several. A chart developed by Fiber Optic Association master instructor Joe Botha helps technicians calculate the amount of time it will take to conduct a fusion-splcing project. This is necessary when a cable needs to be extended, or repaired, or when multiple fibers need to be connected to support a network. Compared to mechanical splicing: The Telecommunications Industry Association (TIA-568.