Execute plans of electrical wiring for well functioning lighting, intercom and other electrical systems. Connect wiring in electrical circuits and networks ensuring compatibility of components. Prevent breakdown of systems by routinely inspecting and replacing old wiring and insulated cables, cleaning circuits etc. Perform effective troubleshooting to identify hazards or malfunctions and repair or substitute damaged units Read blueprints and drawings to understand or plan the layout of plumbing, waste disposal and water supply systems Cut, assemble and install pipes and tubes with attention to existing infrastructure (e.g. electrical wiring)