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    Powering a Garage or Workshop: Dedicated Circuits for Tools, Chargers and More

    A garage or workshop needs more than one tired plug. How to add proper power for tools, an EV charger, a freezer or a welder safely in your Johannesburg home.

    7 April 2026 5 min read
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    Garages and workshops are where a single, tired plug meets a growing pile of power tools, a freezer, a charger and an extension-lead spider's web. If that's yours, it's time for proper power. Here's how it's done.

    Dedicated circuits, not one overloaded plug

    An electrician runs one or more dedicated circuits from your DB board to give you enough properly-protected sockets for tools, a freezer, an EV charger or other equipment. Relying on a single socket and extension leads is a fire and trip risk with power tools and heavy loads.

    Workshop? Consider a sub-board

    A small garage may just need extra circuits; a workshop running heavier tools — welders, compressors, large motors — often benefits from a dedicated sub-board for capacity, safety and convenient isolation. We size it to your equipment.

    Why not just use the existing plug?

    Light tools occasionally, sure — but multiple or heavier tools overload a single circuit, tripping or overheating it. Dedicated, correctly-rated circuits end the nuisance tripping that plagues under-powered garages.

    Done to standard

    Adding circuits and sub-boards is fixed electrical work that must be done to SANS 10142 and certified — exactly what an Electrical COC checks. See our DB board and electrical services, or get a quote to power your space properly.

    Frequently Asked Questions

    An electrician runs one or more dedicated circuits from your DB board (or a sub-board for a larger workshop) to provide enough properly-protected sockets for tools, a freezer, an EV charger or other equipment. Relying on a single socket and extension leads is unsafe for power tools and heavy loads.

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