Commercial Steam Table Buying Guide: Pans, Watts and Plugs

A commercial steam table is bought on one number — how many pans you need open at once — and installed on a completely different one. Pan count is the easy part. The specification that decides whether the unit can actually be plugged in where you want it is the receptacle, and it changes three times across a four-model line. This guide works through both, using the Flamaster FLM-ST series.

Pan count first, and the 14-inch rule

Steam tables are sized in 12" × 20" full-size wells — the standard hotel pan. Count the dishes that have to be hot and open during service, and that is your pan count. Width follows from it, and on this line it follows exactly:

• Every extra pan adds 14 inches. 2 pans = 30", 3 pans = 44", 4 pans = 58", 5 pans = 72". Twelve inches of that is the pan itself and two are the well wall and spacing.
• Depth and height never change. All four models are 30 1/2" deep and 34 1/2" high, so they line up with a standard counter and with each other.

So the question is not "what size steam table" but "how many dishes", and the answer converts straight to wall length. A two-pan unit is a soup-and-one-entrée counter; three is the usual small café or deli hot bar; four and five are cafeteria and buffet lines. Buy one well more than today's menu needs — the incremental cost is 14 inches, and a full line with nowhere to put the vegetables is the complaint we hear most.

The plug ladder — read this before you order

This is where steam table purchases go wrong, and it is worse than the usual "check the circuit" advice, because the receptacle changes three times as you go up the line:

The ladder is not arbitrary — it tracks the code. A steam table is a continuous load, so the National Electrical Code requires the circuit to be rated at 125% of the running current. Work it through: 12.5 A × 1.25 = 15.6 A, which a 20 A circuit covers. 16.67 A × 1.25 = 20.8 A, which a 20 A circuit does not — hence the jump to a 30 A receptacle on the four-pan. And five wells at full power is 5,000 W, which at 120 V would be 42 amps; putting it on 240 V brings it back to a manageable 20.83 A, which is why the largest model changes voltage rather than getting a bigger 120 V plug.

Watts per well: the five-pan is not just bigger

Divide the wattage by the wells and something appears that the headline numbers hide:

• ST2, ST3 and ST4: 500 W per well. Same heat under every pan, whichever size you buy.
• ST5: 1,000 W per well — double. The 240 V model is not simply a four-pan with another well bolted on; every well on it has twice the element behind it.

That matters for what you hold. 500 W per well is comfortable for the shallow 2 1/2" pans most lines run and for product that arrives hot. If you hold deep 6" pans of dense food, or you are on a line where pans get swapped constantly and the water bath keeps losing heat to cold replacements, the extra element on the five-pan is the difference between holding temperature and slowly falling behind it.

Wet or dry — how to run an open well

These are open well tables, which means each well can be run either way, with 8" fiberglass insulation around it to keep the heat where it belongs. The choice is per service, not per purchase:

• Moist (wet) heat — an inch or two of water in the well, food held above it. Heat transfers evenly, product does not dry out or crust at the edges, and the well recovers faster when a cold pan drops in. This is the default for almost everything: sauced dishes, vegetables, rice, stews, proteins.
• Dry heat — no water. Reaches temperature faster and there is nothing to refill or drain. Suits fried and breaded items that go soggy over steam, but it heats less evenly and will scorch the bottom of a pan left too long.

135°F, and what a steam table cannot do

The FDA Food Code sets hot holding at 135°F or above for time/temperature control for safety food. That is the number an inspector probes, and they probe the food, not the well.

Two things follow, and they are the same two that apply to every piece of holding equipment:

• A steam table holds; it does not cook or reheat. Product goes in already cooked to its required temperature and already hot. A well will not bring a cold pan up through the danger zone in any reasonable time, and using it that way is a violation, not a shortcut.
• Stir and check, do not just look. The top of an undisturbed pan reads far hotter than the middle. Stir on a schedule, probe the centre, and log it.

Our commercial food warmer guide covers the display side of the same rule — heated cases and merchandisers for packaged product.

Sneeze guards are not an accessory

If customers serve themselves, or even pass in front of open pans, the food needs a shield. That is a food code requirement for self-service displays in essentially every US jurisdiction, and it is the item most often left off the purchase order and then bought in a hurry.

Each table size has a matching trapezoid guard, sized to the unit rather than cut to fit:

Order the guard with the table. Confirm the height and coverage your local health department expects before installation — the requirement is written around where a customer's face sits relative to the food, and that detail varies.

Pans, and how to split a well

A well takes one 12" × 20" full-size pan, but you are rarely serving four things in four full pans. Adapter bars sit across the well and let you run two halves, three thirds or six sixths in the same opening — which is how a three-pan table serves nine items on a salad-and-sides line.

• Pan depth — 2 1/2", 4" and 6" are the common ones. Deeper holds more but takes longer to come up and is harder to keep even; most lines run 4" for entrées and 2 1/2" for sides.
• Solid or perforated — solid for anything saucy, perforated only where product needs to drain.
• Covers — a lid on a pan that is not being served from cuts heat loss substantially and keeps the water bath from working against an open surface all afternoon.

Steam table pans → · Adapter bars and plates → · Covers →

What else the installation needs

• The right receptacle, installed before delivery — see the table above. This is the one item worth confirming twice.
• A drain plan. Wells are drained at close; a bucket under the valve or a floor drain nearby turns a fifteen-minute job into a two-minute one.
• Ventilation — ask, do not assume. A steam table produces water vapour rather than grease-laden vapor, so it usually does not sit under a Type I grease hood, and in many jurisdictions needs no hood at all or only a Type II condensate hood. Your local authority decides; confirm with the model number before installation.
• Clearance and traffic. 30 1/2" of depth plus a sneeze guard overhang, plus room for a customer on one side and staff on the other.
• Weight. 93 lb at two pans up to 190 lb at five, before water and pans.

Picking one, in a line each

• 2 pan, 30" — soup and one entrée, a small counter, a catering setup
• 3 pan, 44" — the usual café, deli or convenience hot bar
• 4 pan, 58" — a full lunch line; note the 30 A receptacle
• 5 pan, 72" — cafeteria and buffet service, double the watts per well, 240 V
• Holding packaged product instead of pans? That is a heated display case, not a steam table