High bay light wattage for warehouse: how many watt LED high bay for godowns in Kishanganj, Purnea and Katihar
High bay light for warehouse: use 100–150 W for 4.5–6 m sheds and 150–240 W for 6–9 m. Count fittings by lumens, space them under 1.5× the mounting height.
For a warehouse or godown, pick the high bay light by mounting height: about 60–100 W for 3–4.5 m sheds, 100–150 W for 4.5–6 m, 150–240 W for 6–9 m, and 240 W or more above 9 m. Then work out the number of fittings from the floor area and the light level you need, and space them no more than 1.5 times the mounting height apart. For godowns, rice mills, cold stores and factory sheds in Kishanganj, Purnea and Katihar, also choose IP65 or IP66 fittings with good surge protection, because dust, damp and voltage swings kill cheap lights fast. The same advice applies to sheds across North Bengal, Bihar and Sikkim.
These height bands come from the high bay wattage chart published by Hyperlite, a lighting maker. If a consultant or tender spec gives lux levels or a lighting layout, follow that.
Which watt high bay light for which ceiling height?
Height matters more than floor area when you choose the watt. A high bay hung at 8 m has to throw light much further than one at 4 m, so it needs more lumens.
| Mounting height (bottom of fitting) | Usual high bay wattage | Typical use |
|---|---|---|
| 3–4.5 m (10–14 ft) | 60–100 W, wide beam | Small godowns, workshops, shop back-rooms |
| 4.5–6 m (15–20 ft) | 100–150 W | Rice mill floors, small warehouses, cold store halls |
| 6–9 m (21–30 ft) | 150–240 W | Big warehouses, factory sheds, PEB sheds |
| Above 9 m (30 ft+) | 240–300 W and up | Very tall sheds, indoor stadiums |
Source for the height bands: the Hyperlite chart. Below about 3 m, a high bay is usually the wrong fitting. LED battens or panels do the job better and cost less. Our LED batten 20W or 36W guide covers low-ceiling rooms.
UFO, linear or well glass?
- UFO (round) high bay: compact, easy to hang from a hook or bracket, spreads light in a circle. Good for open godowns and factory floors.
- Linear high bay: long fitting that spreads light along an aisle. Better for racked warehouses with long narrow aisles.
- Well glass fitting: small, sealed, low watt. Used for low sheds, verandas, pump houses and damp corners, not for tall halls.
- Flood light pointed down: some sites do this to save money. It gives glare and patchy light. A proper high bay is better for the eyes and the job.
How many high bay lights do I need for a warehouse?
Use this simple method. Lighting makers use the same basic formula (Warehouse-Lighting.com explains it here):
- Floor area in sq m (length × width).
- Multiply by the lux you need. This gives the lumens that should reach the floor.
- Divide by 0.75 to allow for dust, ageing and light lost on walls. This 0.75 maintenance factor is the figure Hyperlite uses; it is a common rule of thumb, not a fixed standard.
- Divide by the lumens of one fitting (read it on the box or data sheet, not just the watt).
- Check spacing: fittings should be no more than 1.5 × mounting height apart.
Worked example (rule of thumb, not a design): a 30 m × 20 m godown = 600 sq m. Target 200 lux → 600 × 200 = 120,000 lumens on the floor. ÷ 0.75 = 160,000 lumens from the fittings. With fittings giving 20,000 lumens each, you need about 8. At 8 m mounting height the maximum spacing is 12 m, so a 4 × 2 grid (about 7.5 m × 10 m apart) works.
Always count by lumens, not watts. Two 150 W high bays can give very different light.
How much lux does a godown or factory need?
Lux is the light reaching the floor. US guidance quoted by lighting makers puts bulk storage at roughly 100–300 lux and active work areas higher. Hyperlite quotes IES RP-7 at 20–30 foot-candles for bulk storage and 30–50 for picking and packing (1 foot-candle ≈ 10.8 lux). In India, IS 3646 and the National Lighting Code give their own levels; your consultant’s spec should name the figure.
| Area | Typical target (general trade practice) |
|---|---|
| Bulk storage, bags stacked, little handling | 150–200 lux |
| Loading bays, aisles with forklifts or trolleys | 200–300 lux |
| Packing, sorting, grading, machine floors | 300–500 lux |
| Fine inspection or assembly | 500 lux and up, often with task lights |
These are rounded working figures, not quotes from a standard. More light than you need just costs more power every month.
100W, 150W or 200W high bay — what to check besides watts?
When you compare high bay lights from Havells or any other brand, read the data sheet for these points:
| Check | What to look for | Why it matters |
|---|---|---|
| Lumens | Total lumens, and lumens per watt | Decides how much light you really get |
| IP rating | IP65 or IP66 | Keeps out dust and water jets |
| Surge protection | Higher kV rating is safer (e.g. 10 kV) | Long lines and lightning spikes damage drivers |
| Power factor | 0.9 or above | Better for factory power bills and PF penalties |
| Body | Pressure die-cast aluminium | Carries heat away from the LEDs |
| Standards | IS 15885 / BIS registration for the LED driver and fitting | Genuine, tested product |
| Beam angle | Wide (90–120°) for low sheds, narrow for very tall ones | Even light without dark patches |
As an example of a real data sheet, the Havells Emberro Ultra 146 W high bay is listed at 25,000 lumens, IP66, 10 kV surge protection and power factor of 0.95 or more. Use these figures to compare like with like.
Which high bay for rice mills, cold stores and dusty sheds?
- Rice mills, flour and feed mills: fine dust settles on fittings and blocks light. Choose IP66 sealed fittings and plan cleaning every few months.
- Cold stores: check the fitting’s operating temperature range on the data sheet before you order.
- Open-sided sheds and loading bays: monsoon rain blows in sideways. IP65 at minimum.
- Sites at the end of long rural lines: voltage often dips and spikes. Pick high bays with a wide input range and good surge protection, and fit an SPD at the main panel.
- Wiring: each LED driver takes a burst of current at switch-on. Check the maker’s “fittings per MCB” figure and do not load too many high bays on one MCB. Our MCB, RCCB, RCBO and MCCB guide explains curves and ratings.
All fixing, wiring and earthing of high bays should be done by a licensed electrician with proper safety gear at height.
What should I write in the BOQ for high bay lights?
For tenders and contractor quotes, a clear BOQ line saves arguments later. Include:
- Type: LED high bay, UFO or linear
- Wattage and minimum lumens (or minimum lumens per watt)
- Colour: cool white (5,700–6,500 K) or neutral white (4,000 K)
- IP rating (IP65/IP66), surge protection in kV, power factor
- Standard: IS 15885 / BIS registered
- Mounting: hook, bracket or chain, with mounting height
- Quantity, make (or “Havells or equal”), and warranty terms from the maker
What decides the high bay light price?
High bay light price depends on wattage, lumens per watt, IP rating, surge protection level, body quality, brand and warranty, and on quantity. A cheap high bay with low lumens per watt can cost more over a few years in power and replacements. We do not publish rates online because they change with brand schemes and quantity. WhatsApp us your list for today’s rate.
Shree Shyam Suppliers is an authorised dealer for Havells, Lauritz Knudsen (L&T) and Mescab, and also deals in brands like Polycab, Schneider and Legrand. You get genuine stock, help matching the watt and lumens to your shed height, and one itemised quote that covers the high bays, cable, MCBs and DB together. We deliver across North Bengal, West Bengal, Sikkim and Bihar. See our full range of lights and fans.
Ordering tip
Send us on WhatsApp: the shed length, width and mounting height, what the space is used for (storage, packing, machines), the brand you prefer, and the site location in Kishanganj, Purnea, Katihar or anywhere else. Shree Shyam Suppliers will reply with suggested wattage, quantity and an itemised quote.
Quick answers
Which high bay light is best for a 20 ft height shed?
A 20 ft (about 6 m) shed usually needs LED high bays of around 100–150 W each. Check the lumens on the data sheet and space fittings no more than about 9 m apart.
How many lumens does a 150W LED high bay give?
It depends on the make and efficiency. Good fittings give roughly 130–170 lumens per watt, so read the data sheet and compare lumens, not only watts.
Is IP65 enough for a rice mill high bay light?
IP65 keeps out dust and water jets, but for heavy fine dust like in rice and flour mills an IP66 sealed fitting is the safer choice, along with regular cleaning.
Can I use a flood light instead of a high bay in a godown?
You can, but a flood light pointed down gives glare and patchy light. A high bay is designed to spread light evenly from height, so it suits godowns and sheds better.
See the products: Lighting & fans
