Written by Chris · Licensed Level 2 ASP Electrician · Licence 397193C · Published 6 November 2026

What Are the Electrical Requirements for a Gym or Fitness Studio Fit Out in Sydney?

What are the electrical requirements for a gym or fitness studio fit out in Sydney? A gym needs dedicated circuits for cardio equipment that runs continuously all day, enough switchboard capacity for air conditioning, sound systems and charging stations running together, and RCD protected outlets throughout the training floor. The equipment load in a modern gym is far closer to light industrial than to a typical retail shop, and the switchboard needs to be sized accordingly.

1. Why gym equipment load is different to a typical shop

A treadmill, cross trainer or stationary bike with a motorised incline or resistance system draws meaningful continuous current, and unlike a retail shop's occasional use outlets, gym equipment is often running for eight, ten or more hours a day without a break. Stack six or eight machines together on a busy training floor and the combined, continuous load looks a lot more like light industrial equipment than a typical commercial tenancy. A switchboard and circuit layout sized for a previous retail or office use of the same space is rarely adequate once gym equipment moves in.

This is the single most common issue our technicians see in gym fit outs: equipment purchased and installed before the switchboard's actual spare capacity was ever properly assessed. Our sister site HD Inner West covers a similar assessment problem for another equipment heavy tenancy type in its guide to fitting out a light industrial or creative studio space, where start up current from kilns, dust extractors and other equipment catches a lot of fit outs out in exactly the same way.

2. Dedicated circuits for cardio equipment

Cardio machines are best wired on their own dedicated circuits, grouped sensibly rather than every machine on the floor sharing one circuit breaker. Several treadmills on one undersized circuit is a textbook cause of nuisance tripping, and it tends to happen at exactly the wrong moment, a packed evening class, rather than conveniently during a quiet morning. Planning circuits around the actual equipment layout, not just a generic count of outlets, is what keeps a training floor running without unexpected downtime.

It is also worth considering future equipment purchases when planning circuit capacity. A gym that adds three more treadmills a year after opening should not have to open walls again to add the circuit capacity that should have been planned in from the start.

3. Three phase power for larger studios

Once a studio is running multiple pieces of cardio and strength equipment, commercial grade air conditioning, a sound system and charging stations together, a single phase supply can genuinely struggle to carry the combined load without the switchboard constantly running close to its limit. Many larger gyms and fitness studios benefit from an upgrade to three phase power, which spreads the load across three separate phases rather than forcing everything through one, giving real headroom for equipment growth rather than a board that is already maxed out on opening day.

This is worth assessing early, ideally before a lease is signed, since the cost and process of a three phase upgrade can factor into whether a particular tenancy is genuinely suitable for a gym fit out at all. Our guide on three phase power for warehouses and industrial units covers a similar assessment for another equipment heavy tenancy type.

4. Air conditioning, sound systems and the equipment that isn't obvious

A training floor's electrical load is not just the visible cardio and strength equipment. Commercial air conditioning capable of keeping a room full of exercising people comfortable is a serious load in its own right, often underestimated when a fit out is planned around equipment alone. Sound systems, screens and charging stations for staff and members are lighter individually but still deserve their own circuit, separate from equipment circuits, so a tripped cardio circuit does not also kill the music and the screens mid class.

Group fitness studios with heavier lighting rigs, projection equipment or specialised sound systems for classes like spin or boxing should plan these as a distinct load category from the general training floor, rather than assuming the same circuits will cover both uses. If your studio is going into a converted warehouse, our guide on warehouse lighting layout covers the lighting side of a similar conversion in more detail.

5. RCD protection across the whole training floor

Every socket outlet and circuit on a gym floor needs residual current device protection under AS/NZS 3000, the same baseline requirement as any other commercial space, and it matters more in a gym given the volume of equipment plugged in and unplugged, moved around and occasionally splashed by a water bottle or a sweaty towel left too close to a power point. A properly RCD protected floor is also simply safer for members using equipment around cables and outlets all day, every day.

If your gym is in a converted warehouse or older retail space, it is worth having the whole tenancy checked with an electrical safety inspection before opening, rather than finding out about gaps in protection after members are already training on the floor.

6. Planning for growth, not just opening day

Gyms and fitness studios tend to add equipment over time as membership grows, which makes spare switchboard capacity genuinely valuable rather than a nice to have. A board with no room for an extra circuit breaker forces every future equipment purchase into an awkward, expensive retrofit. Planning meaningful spare capacity into the original fit out, even if it costs a little more upfront, is almost always cheaper than reopening walls for a switchboard upgrade a year or two after opening.

Why it's Level 2 ASP work

Standard circuit and switchboard work within an existing single phase supply is typical licensed electrician territory. It becomes Level 2 ASP work once a gym genuinely needs more supply capacity than the existing connection provides, which is common with larger studios adding three phase power or a full power supply upgrade to support the combined equipment, air conditioning and amenity load of a full training floor. Getting this assessed before signing a lease, rather than after equipment has already been ordered, avoids an expensive surprise partway through the fit out.

How High Demand Electrical helps

High Demand Electrical is a licensed local team, not a call centre, servicing gym and fitness studio fit outs across Sydney's West, South West and Sutherland Shire. We will assess your actual equipment list, from cardio machines through to air conditioning and sound, design dedicated circuits where nuisance tripping would otherwise be a problem, and tell you plainly whether a switchboard upgrade or three phase connection makes sense before you commit to a space. If your fit out needs defect notice rectification from a prior tenancy, we can scope that work in the same visit.

Get a Fit Out Electrical Quote

If you are fitting out a gym or fitness studio in Sydney, talk to High Demand Electrical before you order equipment or sign a lease. Get a Fit Out Electrical Quote or call 0402 559 777. Every job needs a site assessment before scope or pricing can be confirmed.