Церковь котирует стену 12 м2 как телевизор: ищет розетку. Арендная компания котирует ту же стену иначе: пиковые амперы, последовательность включения и генератор, который не садится на полном белом.
Every honest datasheet lists two power numbers. Peak (max, full white at the brightness you actually specified) is for circuits, distro, and generators. Average (typical content) is for kWh, HVAC, and the monthly bill. Swap them and you either trip on Sunday or overbuild a sub-panel you did not need.
SFxDisplay делает арендные кабинеты для подвеса или стека и стационарные indoor-кабинеты для монтажа на стену. Мы завод, а не электрик. Используйте эту страницу, чтобы читать обе цифры до заказа панелей.
Пик — лабораторное условие. Средняя — шоу.
Пиковая мощность — каждый LED на полном белом, на яркости из PO, обычно со всеми RGB субпикселями. Это worst case для цепи.
Across indoor rental and sanctuary walls, real mixed content commonly lands around 30–50% of peak. Dark-background motion can sit lower. A full-white test pattern sits near 100%. That gap is why a volunteer can run a wall all morning on “not much” and still dump the breaker when the first bright bumper hits.
SFxDisplay’s indoor COB series publishes both numbers on the product sheet: 400 W/m² max, 120 W/m² average. That average is 30% of peak. It is a real example of the gap, not a promise that every cabinet in the factory behaves the same. Indoor SMD and outdoor rental walls run higher peaks because they are brighter. Always take both figures from the BOM you are buying, in W/m² or watts per cabinet, with brightness named.
Не считайте ячейку «Power consumption: 700 W» истиной, если лист не говорит: на кабинет, на квадрат или на всю стену.
For brightness itself, see LED screen nits vs lumens. Running an indoor wall at 100% nits in a dark room wastes watts and heat. It does not make the circuit smaller. The circuit still has to survive the moment someone turns it up.
Диапазоны планирования, не котировка
These are planning ranges from 2026 church, rental, and factory guides. They are not SFxDisplay list prices and not a substitute for the PO.
| Job | Typical peak (full white) | Typical average (mixed content) | What the average is for |
|---|---|---|---|
| Indoor meeting / COB fine pitch | ~400–600 W/m² | ~30–40% of peak | kWh, HVAC |
| Indoor rental / sanctuary / events | ~400–700 W/m² | ~30–50% of peak | kWh, fuel |
| Outdoor daylight rental / billboard | often 800–1,200 W/m² | ~45–60% of peak, higher if it stays bright | kWh, generator fuel |
A 4 m × 3 m indoor rental wall at a 600 W/m² planning peak is about 7.2 kW at full white. At 40% content it is about 2.9 kW. The electrician sizes to 7.2 kW (plus processor, plus code derating). The facilities manager budgets kWh from ~2.9 kW at the hours you actually run. If you reverse those two figures, one of them will be wrong in public.
Уличный дневной свет — другая электрическая задача при том же числе кабинетов indoor. Снова см. ниты: 5000-10000+ нит меняют ватты сильнее, чем ярлык кабинета.
Размер цепи под пик, затем derate
In the US, a load that runs three hours or more is treated as continuous. Planning practice is to keep that load at 80% of the breaker (NEC 210.20 is the usual citation; local code wins). A 20 A circuit at 120 V is 2,400 W on the handle. Continuous usable is 1,920 W.
Грубая конверсия: амперы ~ ватты / вольты. Затем делите на 0.8, прежде чем считать автоматы.
Worked planning example: 12 m² indoor wall, 600 W/m² peak → 7,200 W of cabinets.
| Service | Peak amps | After 80% derate | Dedicated circuits (planning) |
|---|---|---|---|
| 120 V, 20 A | 60 A | 75 A of capacity | four 20 A, nothing else on them |
| 230 V, 16 A | 31 A | ~39 A of capacity | three 16 A, or one 32 A with headroom |
| 230 V, 32 A | 31 A | ~39 A of capacity | one 32 A often holds this wall; confirm the venue socket is actually 32 A and actually dedicated |
Add 10–20% for the processor, fibre converters, media PC, and the rack that must not share a coffee circuit. Add more if the same board also feeds stage lighting. A convenience outlet behind the stage is not a survey.
Same 12 m² on SFxDisplay indoor COB numbers (400 / 120 W/m²): peak 4.8 kW, average 1.44 kW. The circuit still follows 4.8 kW, not 1.44 kW. The bill follows 1.44 kW at the brightness you actually run.
Мы не сертифицируем электроработы. Лицензированный электрик на survey — часть работы, а не сюрприз в день load-in.
Inrush — почему стена падает при включении, а не на припеве
В каждом кабинете — импульсные БП. В момент контактора они заряжаются вместе. Этот всплеск — не средняя мощность шоу.
Практический совет завода, не такелажный plot:
- Включайте последовательно: сначала процессор и управление, затем стену секциями, а не одним ударом.
- Не делите стену с индуктивным хламом (моторы, диммеры) на одном маленьком автомате, если можно избежать.
- Generators need headroom, not a nameplate that matches average kW. Event crews often plan ~25–30% above calculated peak so inrush and other departments do not collapse the voltage. Voltage sag looks like flicker and colour shift before the screen goes black.
Если воскресная стена иногда «просто не стартует», смотрите inrush и общие цепи до замены модулей.
Тепло — те же ватты, в комнате
Каждый ватт, который берёт стена, становится теплом. Indoor-стена с пиком 7 кВт и средней 3 кВт — это всё ещё обогреватель на 3 кВт в HVAC-балансе.
Если залу уже тяжело летом, скажите до выбора нит. Приглушение indoor-стены до яркости, которую реально используете, режет и ватты, и тепло.
500 x 500 vs 500 x 1000 не меняет физику
Арендные кабинеты SFxDisplay — 500 x 500 мм или 500 x 1000 мм, подвес или ground-stack. Размер кабинета меняет handling и число замков, не закон ватт на квадрат.
Lock style does not either. Soft lock vs hard lock is a touring mechanic. See soft vs hard connection. Pitch still comes from the closest seat: P2.6 vs P2.9 vs P3.91.
Что прислать до покупки панелей
Полезный бриф по питанию короче wishlist «хочу 4K»:
- Готовая ширина x высота, indoor или outdoor, hang / stack / wall-mount
- Яркость, на которой реально будете работать (не каталожный максимум)
- Домашний ввод: вольты, одна или три фазы, ближайший выделенный автомат и что ещё сидит на этой цепи
- Cameras yes/no (that sets refresh, not watts — see 3840Hz vs 7680Hz)
We will return a cabinet count, the peak and average watts from that BOM, and whether the job wants SFR-S / SFR-H rental or a fixed indoor series. Steel, motors, and the electrical permit stay on site. Cost beyond the cabinets: LED video wall cost in 2026. Churches comparing LED to a projector: church LED wall vs projector.
FAQ
How many watts per square metre does an LED wall use?
Ask for peak and average. Indoor event and sanctuary walls often plan around 400–700 W/m² peak, with mixed content at roughly a third to a half of that. Outdoor daylight is higher. Use the sheet for the cabinets on the PO.
How many amps does a church LED wall need?
Amps = peak watts ÷ volts, then apply the 80% continuous rule. A 12 m² indoor wall at a 7.2 kW planning peak is about four dedicated 20 A circuits at 120 V, or a 32 A-class feed at 230 V with headroom. Measure the building. Do not guess from a projector circuit.
Can we run it from the existing stage outlets?
Only if those outlets are dedicated, correctly rated, and not already feeding lights, audio, and a coffee urn. Most older sanctuaries need new home-runs. That is an electrician line item, not a factory accessory.
Do we size the generator to average power?
No. Size to peak, plus processor, plus inrush headroom. Use average for fuel and kWh.
Does finer pitch use more power?
More LEDs per square metre can draw more, but driver design and brightness dominate. A P2.6 wall at 1,000 nits can be kinder than a coarser outdoor wall at 6,000 nits. Compare measured W/m² at the brightness you will run.
Will SFxDisplay spec the electrical panel?
We spec cabinet peak and average, recommended cabinets per power feed, and the processor load. Building panels, permits, and generator hire are local work. We will not pretend a blog post is a load calc.
Две цифры в PO, в двух местах
Write peak W/m² at named nits for the electrician. Write average W/m² at the same nits for the bill. If the vendor only prints one cell, it is not finished.
Send width × height, indoor vs outdoor, the service you actually have, and closest viewer. Start on the rental series or indoor series, or contact SFxDisplay. Buy the wall the room can power.
