
Upgrade your property with professional underground electrical solutions from SEMA Air & Electrical. Whether you are powering a custom workshop in your new shed, automating a pool system, or running complex underfloor services, we ensure your project meets the highest South Australian standards. Our team specialises in regulation-depth trenching, maintaining the mandatory 600mm depth to protect your home’s infrastructure and ensure long-term safety.
We take the guesswork out of compliance by using premium 50mm conduits and installing high-visibility "Warning: Electric Cables Below" marker tape within every trench. This meticulous attention to detail protects your family and property, providing a clear visual alert for any future landscaping or maintenance work. From the red brick homes of Adelaide to the sloped blocks of Belair, we deliver clean, precise, and fully compliant installations that stand the test of time.

At SEMA Air & Electrical, we pride ourselves on being the local experts in reliable outdoor power. We don’t just run cables; we provide a seamless, end-to-end service—from the first shovel in the ground to the final safety check—so you can enjoy your backyard upgrades with total peace of mind. Let us handle the technical side of your shed or pool project with the professional quality your home deserves.
Are you looking to install specific high-draw appliances, like a hoist or a heavy-duty pool heater, that might require a dedicated circuit.