Barn wedding on Saturday at 6 p.m., and the chocolate fountain popped the same 20-amp line as two 100-cup coffee urns — twice — right as the father of the bride started his toast. We rerouted with a 50’ 12-gauge to an isolated outlet and pivoted dessert to passed bites, and the couple thought it was “planned theater,” but please tell me I’m not the only one who carries a circuit map and GFCI tester like a security blanket.
Same here — our fountain tripped a 20A with two 100-cup urns until we pre-melted in cambros and ran the fountain with the heater off on its own GFCI; that thing’s a sugar space heater. If you can’t split circuits, stagger the urns to ‘keep warm’ during toasts so the elements aren’t cycling at the same time. Nice save on the ‘planned theater’, that’s the move.
Been burned by a fountain plus two 100‑cup urns at a 6 p.m. barn gig — . I carry a Kill A Watt and a clamp meter now (Kill A Watt - Wikipedia): map the draw during setup, split the urns onto different duplexes, and run the fountain on a 50’ 12‑gauge to its own circuit. If the panel’s a mystery, I preheat coffee in cambros and cycle one urn off during toasts so the load stays under 20A and it still feels like ‘planned theater.’.
I switched to brewing off-site and arriving with full airpots, so the fountain gets its own outlet and there’s no electric tug-of-war during toasts. Lines up with @charlie_m56’s “plan the draw” mantra without extra gadgets, but it only works if your hold time is within 3–4 hours or you’ve got insulated jackets.