Brewery electrical work in San Antonio: from the brewhouse to the taproom

Brewery electrical work is plant work with a bar attached. The brewhouse runs three-phase equipment, the glycol chiller cannot stop, the floors get hosed down every day, and the taproom has to open on time. Each of those has its own rules, and the wiring that suits one of them is wrong for another. This guide covers how we wire the brewhouse, the cellar and the taproom in San Antonio breweries, from the first load calculation to the final connection on a new tank.

Does a brewery need three-phase power?

Often, depending on the equipment. Brewhouse equipment, chillers and canning lines can call for three-phase power, and the equipment sheets say what each piece needs. A load calculation from the equipment list shows whether the building's service can carry it all, and that answer comes before any equipment is ordered.

Many breweries move into buildings that were not built for them. A former warehouse or shop space may have a service sized for lights and a few small machines. The equipment list for a brewhouse, a chiller and a canning line can ask far more of it, and the load calculation is how that gap is found on paper instead of on the first brew day.

If the service has to grow, the work is coordinated with CPS Energy, because the utility decides what it can provide at the building. Starting that conversation before the equipment is ordered keeps a new brewhouse from sitting crated while the service catches up.

Shops with heavy motor loads face the same three-phase question, as our guide to auto shop electrical work explains.

How is brewhouse and process equipment wired?

Each piece of brewhouse equipment comes with sheets that give its voltage, phase, circuit size and connection. Pumps, mills, heating elements and control panels each get a circuit and a disconnect where the code requires one, placed where the brewers can reach them and the hoses cannot.

Pumps and mills are motor circuits, and the brewhouse control panel needs its own feed. Wiring each from its sheet means the conductor, the protection and the connection match what the maker calls for, and a replacement pump does not inherit a circuit sized for the old one.

Placement matters as much as sizing. A disconnect the brewer has to reach behind a tank, or one that sits in the path of the hose, gets used less and wears out sooner. We lay out the disconnects and receptacles with the brewers, around how they actually move through a brew day.

Larger production breweries and their motor control work are handled through our industrial electrical contractor page.

Why does a brewery glycol chiller need its own circuit?

The glycol chiller holds fermentation temperatures, and a chiller that trips at night can cost a batch. It gets its own circuit sized from its sheet, a disconnect within sight, and surge protection. The walk-in cooler gets the same care, because the cold side of a brewery cannot share a circuit with anything that might trip it.

A chiller on a shared circuit is one of the common failures. Somebody plugs in a heater or a pump on the same circuit, the breaker trips overnight, and nobody knows until the tanks are warm in the morning. A dedicated circuit removes that risk.

Surge protection protects the chiller's controls from the voltage spikes a building sees when large motors switch on and off. Some breweries also put the chiller and the walk-in on a standby generator, so the cold side keeps running through a utility outage.

Our surge protection page covers the protection itself, our commercial standby generators page covers backup power, and our guide to cold storage electrical work covers walk-in coolers in more detail.

What wiring do brewery washdown areas need?

Brewhouse floors are washed down daily, so the receptacles, boxes, covers, fixtures and fittings in those areas have to be rated for wet locations, with GFCI protection where the code calls for it. They are installed so water drains away from them. Getting this right at rough-in is far easier than replacing corroded fittings later.

Material that is not rated for washdown looks fine on the day it goes in. The damage shows up later, as corrosion inside a box, a cover that no longer seals or a GFCI that trips every time the floor is cleaned. By the time it is visible, the fix usually means replacing the device and the fitting together.

Conduit and fittings matter as much as the devices. Fittings suited to washdown keep water out of the raceway, and boxes placed so water runs off them rather than into them last far longer. We plan these details with the brewery before rough-in, while changes are still easy.

What goes into a brewery taproom build-out?

A taproom is a restaurant style build-out: lighting, the bar coolers, the point of sale, any kitchen equipment, and exit and emergency lighting. Inside the city it is permitted and inspected through the City of San Antonio Development Services Department, and we plan the inspections around your opening date.

The taproom is the part of the brewery the public sees, and it carries the same requirements as any other space where people gather. Exit signs and emergency lighting are part of the inspection, and the bar coolers and any kitchen equipment are wired from their sheets like the equipment in the brewhouse.

The opening date sets the schedule. Rough-in, the inspections and the final connections are planned backward from that date, so the inspection sequence does not hold up a grand opening that has already been announced.

The build-out sequence is covered on our tenant build-outs page, and taproom kitchens on our commercial kitchen electrical page.

Can a brewery add equipment while it keeps running?

Yes. New circuits are installed ahead of time, while the brewery keeps brewing, and the final connections are scheduled with you so any shutdown is short and planned. A new tank, a second chiller or a canning line starts with a load calculation to confirm the service can carry it.

Most of the work on an expansion can happen without touching anything that is live. Conduit, wire and new disconnects go in first. The moment the existing system has to be shut off is kept to the final tie in, and that moment is set around your brew schedule rather than ours.

The load calculation is the step that keeps an expansion from turning into a service problem. A canning line or a few more tanks can be the load that pushes a service past what it can carry, and finding that before the equipment arrives leaves time to plan the fix.

What goes wrong in brewery electrical systems, and how is it prevented?

The common failures are corroded connections in wet areas, a service that runs short when a tank or a canning line is added, and a chiller on a shared circuit. Wet rated materials, a load calculation before every expansion and dedicated circuits for the cold side prevent all three.

Each of these failures starts small. A little corrosion, an occasional trip, a breaker that runs warm. Scheduled maintenance finds them while there is still time to fix them on a planned day, instead of in the middle of a brew.

• Run a load calculation from the equipment list before ordering equipment.
• Give the glycol chiller and the walk-in their own circuits.
• Use wet location rated material on every washdown floor.
• Install new circuits ahead and schedule the final connection.
• Plan taproom inspections back from the opening date.

Scheduled checks of the wet areas and the cold side are set in a maintenance agreement. For everything we do in breweries, see our brewery electrician page, and for the rest of our scope, commercial electrical services. Send the equipment list if you have it, and describe the building through our contact page. The owner will respond the same business day.