The 100W LED Flood Light for Yards and Building Fronts

100 watt LED flood light: the short answer

A 100 watt LED flood light is a yard and building-front light. It suits a factory or warehouse yard, a loading area, a large society parking lot, a building front or the edge of a playground, mounted about 6 to 9 metres up, most often around 8 m on a wall, roof edge or pole. From there, one fitting tilted down lights a patch roughly 15 metres wide and 15 to 18 metres deep, as a rule of thumb.

It draws about 0.43 A at 230 V and, at typical LED efficiencies, gives somewhere around 8,000 to 10,000 lumens; the carton gives the exact figure. That is too much for a house compound, where a 50W does the job, and not enough on its own for open ground, where several 100W or 200W fittings on tall poles are used.

Our VIYONA 100W flood light is ₹1,950 MRP as the standard 1089 or the lens 1093. Per watt, it is the lowest-priced fitting in our whole outdoor range. We make it at our works in Marol, Andheri East, Mumbai, packed 10 per box.

Mounting height and coverage

A 100W needs height to spread its light. At about 8 m on a godown wall, two fittings about 15 m apart cover a yard of roughly 30 m by 18 m for security, with their patches overlapping in the middle; for working light there, add a third.

Two 100W flood lights over a godown yard

Drawn by us to scale, as a rule of thumb, not a lux plan. A large site should be laid out by a lighting designer.

• Below 6 m: a glaring hot spot under each light and dark gaps between.
• 6 to 9 m: the usual range for 100W.
• Above 9 m: consider 200W or lens fittings.

How much light is that? A worked example

Assume the fitting gives about 90 lumens a watt, so about 9,000 lumens, and that about half lands usefully on the yard. Spread over different areas:

As common practice, around 20 lux suits a yard where people load, walk and drive, and 5 to 10 lux is enough for a security patrol. So one 100W lights about 200 to 250 sq m for working (about 18 to 22 lux on these assumptions), or about twice that for security only. The yard in the diagram, about 540 sq m, takes two for security and three for working light. Our guide to lumens vs watts explains the units.

Where a 100W flood light fits

• Factory or warehouse yard, from the shed wall or roof edge.
• Loading bay where trucks back in at night.
• Large society parking lit from the building at about the second or third floor.
• Building front of four to six storeys, usually in lens.
• Edge of a playground or box-cricket turf, from poles.
• Not: a bungalow compound; a 50W mounted lower suits it.

The common thread is height and area. A 100W wants to be at least 6 m up and to light a space measured in hundreds of square metres. Put one on a house wall at 4 m and it blinds the street; put it at 8 m over a yard and it does exactly the job.

For the house-sized version of the same question, see our 50 watt LED flood light page.

100W flood light price

Both 100W codes are printed at ₹1,950. Against the wattages either side:

That works out to ₹19.50 a watt, the lowest in our outdoor range; our outdoor price list compares every fitting per watt. A box of ten 1089 fittings is ₹19,500 at MRP.

Standard or lens at 100W?

For a yard, a loading bay or a parking lot lit from the wall above it, choose the standard 1089: the wide beam covers the ground from near the wall to the far side evenly.

For a building front, choose the lens 1093: fittings on the ground or a lower roof, aimed up, usually need a narrower beam to reach the top floors instead of washing the bottom ones; ask us for the beam angle of the 1093 before a facade job. The lens also suits the far end of a long yard lit from one wall, and a turf lit across from its edge.

Many factory sites use both: standard on the walls for the yard right below, lens on the roof edge for the gate and the far boundary. Both cost ₹1,950, so write the version on every order line. See our lens flood light guide for the beam difference.

One 100W, two 50W or one 200W?

• One 100W at 8 m: ₹1,950, one bracket, one cable run.
• Two 50W at 5 m: ₹2,900, more points, lower mounting, fewer long shadows.
• One 200W on a tall pole: ₹5,200; two 100W cost ₹3,900.

Where there is a mounting point 6 m or more up, one 100W is ₹950 cheaper than two 50W for the same rated watts. Where there is not, two 50W fittings lower down are the practical choice. And going up to a single 200W only makes sense with a single tall mounting point; otherwise two 100W fittings cost less and light from two directions. Our flood light manufacturer page covers the full range.

Mounting at 8 m: wall, roof edge or pole

At 8 m the bracket and the fixing matter more than the fitting. On a shed wall, fix the bracket into a column or beam, not a thin infill wall. On a roof edge, use a bracket bolted to the structure, not to sheeting. On a pole, use a cross-arm made for the load and the wind.

Think about maintenance access before fixing. A fitting at 8 m needs a tall ladder with a second person, or a lift. Put it where a ladder can stand on firm, level ground, not over a drain or a ramp. Leave a short service loop of cable at the junction so the fitting can be lowered onto the platform for work.

Wiring several 100W lights

Each 100W draws about 0.43 A at 230 V. Ten of them draw about 1,000 W, or about 4.3 A. A yard lighting circuit like that belongs on its own MCB and RCCB (30 mA earth-leakage breaker) at the board, switched by a timer or a daylight sensor.

• Phase through the switch or timer, neutral direct, earth to every fitting body and pole.
• Long runs: across a big yard, voltage drop sets the cable size; your electrician sizes it for the length.
• Junctions: weatherproof boxes with glands, never taped.

Our guide to the 10 amp MCB explains how a circuit of this size is protected, and our installation guide covers each fitting.

Running cost of a 100W

On for about 12 hours a night, a 100W flood light uses 1.2 units a night, about 438 units a year. The two-fitting yard in the diagram uses about 876 units a year.

On a working yard, put the lights on a timer matched to the shift, or a daylight sensor that switches off at dawn. A yard lit all night for security only can often run one of two fittings after midnight, on a separate switch, and halve the units for those hours.

Spares, brackets and weather

We list spare drivers up to 50W only; for the 100W we do not list a spare driver, so ask us for the right one before a fitting fails. We list two wall mounting brackets, 1082 at ₹90 and the big 1083 at ₹180; ask your dealer which suits the 100W housing.

Our catalogue does not print an IP rating for the flood lights. A 100W at 8 m on an open roof edge takes the full monsoon, so ask for the rating of the exact code before fitting it there. See IP rating for lights for what the digits mean.

Mistakes people make at 100W

• 100W on a house: lights the street and the neighbours; 50W suits a compound.
• Fitted at 4 m: glare and a hot spot; a 100W wants 6 m or more.
• Aimed level: most of the light goes past the yard into the road.
• Standard on a facade: the lower floors wash out and the top stays dim; use a narrow-beam lens code.
• No access plan: a fitting nobody can reach safely does not get serviced.

A 100W rewards height and planning. At 8 m, tilted down, on its own switched circuit, it is the most economical way we know to light a working yard.

Where we supply

Every fitting on this page is made at our works in Marol, Andheri East, Mumbai, and sold through dealers across Maharashtra and in many other states. See where we supply in Maharashtra and how we supply the rest of India. Orders placed through our office are delivered all over India, in full boxes only.

From our catalogue: LED flood lights, wall mounting brackets and LED street lights.

For the whole range, see VIYONA LED lights and our LED light price list.