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I’m setting up a new workshop in my garage, and I want the electrical panel layout to be done right from the start. I’m not sure whether it makes more sense to keep all the workshop circuits in one subpanel or spread them out in the main panel, especially since I’ll have tools, dust collection, lighting, and a future heater. If you’ve planned or wired a shop before, what panel layout worked best for you and what would you do differently?

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For a new workshop, the best panel layout is usually the one that keeps the shop circuits organized, easy to shut off, and sized with a little room for growth. In most cases, that means using a subpanel dedicated to the workshop if the shop is in a detached garage or if the load is large enough to justify it. A subpanel gives you a clean way to separate the shop from the rest of the house, which makes troubleshooting easier and keeps you from hunting through the main panel every time you need to reset a breaker.

If the workshop is inside an attached garage and the load is modest, you can sometimes keep everything in the main panel, but I still like the idea of grouping the workshop circuits logically. For example, put lighting on one breaker or two, receptacles on separate 20 amp circuits, and then dedicate individual circuits to heavier equipment like a table saw, dust collector, compressor, or heater. That way one machine tripping a breaker does not take out the whole shop.

The most practical layout for many people is a 60 amp or 100 amp feeder to a subpanel in the workshop, then branch circuits from there. Even if you do not use all that capacity on day one, it gives you breathing room. Shops tend to grow faster than people expect. A few extra outlets, a second dust collector, or a small welder can change the electrical needs pretty quickly. It is much easier to oversize the feeder a little now than to rework everything later.

Inside the panel, leave spare breaker spaces if possible. That sounds simple, but it saves a lot of headaches. Also think about where the panel is mounted. A spot near the entry door, with clear access and good lighting, is usually better than tucking it behind storage or machines. You want to be able to reach it quickly in an emergency and service it without moving half the shop.

For workshop wiring, separate lighting from receptacles whenever you can. If a tool trips a breaker, you still want the lights on. If you know you will run sensitive electronics or battery chargers, it can help to keep those on their own circuit too. Some people also like to label every breaker by machine or zone, which sounds minor until the first time something shuts off unexpectedly.

If you are unsure about load sizing, voltage needs, or local code requirements, it is worth having a licensed electrician look over the plan before anything is installed. Workshops often need more circuits than a standard room, and the safest layout is the one matched to your actual equipment, not a guess.
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