13 Amp vs 3 Phase Glasswasher: What Does Your Pub Actually Need?

Most new licensees assume they need an electrician, a three-phase supply and a significant installation bill before they can wash a single glass. In most cases, that’s simply not true.

Here’s what the electrical question actually looks like in practice.

---

The Majority of Pub Glasswashers Run on 13 Amp

A standard 13 amp socket — the same type powering your till, your card reader, your microwave — will run most under-counter glasswashers without issue. These machines typically draw between 10 and 13 amps at 230V, which puts them comfortably within a domestic-style ring main circuit.

At Teal Farm we run a 13 amp glasswasher behind the bar. Saturday nights at 180 covers, quiz nights, live sport — it keeps up. The key is cycle time and usage pattern, not electrical supply.

If you’re opening a pub with a standard single-phase supply (and most UK pubs have this as a minimum), you can have a glasswasher operational today without calling an electrician.

---

When Does 3 Phase Actually Matter?

Three-phase supply delivers 415V across three live conductors. It’s faster to heat, more powerful under sustained load, and better suited to high-throughput commercial environments.

You need to start thinking about 3 phase when:

• You’re running a large passthrough or conveyor glasswasher (commercial hotels, high-volume venues)
• You’re washing continuously for 6+ hours with minimal recovery time between cycles
• Your site already has 3 phase installed and your equipment is spec’d accordingly
• You’re operating a kitchen glasswasher alongside a full commercial catering setup

For the vast majority of pub bars — community locals, food pubs, sports bars — a 13 amp under-counter machine is the correct choice. Don’t let anyone talk you into unnecessary electrical work before you’ve established your actual volume.

---

The Buffalo DW467: Plug In, Start Washing

The [Buffalo DW467 Glasswasher](https://amzn.to/4ukKRuU is the machine I point new licensees toward when they ask for a straightforward starting point. It’s 13 amp, plug and play, and doesn’t require a dedicated circuit or professional installation beyond a standard socket.

Cycle time is around 90 seconds. It handles standard pub glassware without drama and the build quality is solid enough for daily service. The price point makes it a sensible first machine or a reliable backup unit.

---

The Drain Pump Rule

Whatever machine you’re looking at — 13 amp or 3 phase — check whether it has a built-in drain pump or relies on gravity drainage.

This matters more than most people realise.

Gravity drain machines need the outlet positioned lower than the machine. Under a bar counter, with pipework running through cabinetry, that’s often not achievable. A machine with a built-in drain pump gives you genuine flexibility on placement and avoids a costly plumbing job to get the fall right.

Before you commit to any glasswasher, confirm drain pump included or not. It’s the question that saves you an awkward call to a plumber three days before opening.

---

The Short Answer

New licensee, standard pub bar, UK single-phase supply: 13 amp is almost certainly what you need. The Buffalo DW467 is a proven, no-fuss option that will be washing glasses the same day it arrives.

Don’t over-specify on electrical requirements before you know your actual throughput. You can always upgrade. You can’t un-spend the installation cost.

---

Before you sign anything, know your numbers. Pub Command Centre: real-time labour %, VAT and cash position from day one. £97 once.
👉 https://smartpubtools.com/5684-2/

Looking for a pub to take on? Browse our directory of 697 independently assessed UK pub opportunities — every one with real financial data and operator assessments. View the UK Pub Directory →