King Kong is actually sensitive.

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When King Kong was introduced to the public, paraded onto the stage, and lit-up in grandeur and extravagance, his reaction was, well . . .

“ It’s Just

TOO Damn Much Light. ”

Was he upset?

For sure!

Why?

Too much light hurts the eyes and creates undue stress, kills energy, and wastes money.

And if there’s one thing Kong hates – it’s wasting money. Fixtures that produce too much light also cost more, often so much you lose a Bid by going over budget, and that’s a chain breaker!

So…how does one avoid throwing Kong into a blind rage?

Know the Environment.

Avoid Over Illumination !!!

Let’s go back to two simple lighting basics.

For thousands of years light was the primary source of light and is still the standard today.

A lumen is used to measure light output, and the candle emits about one lumen in light.

Every light fixture has a lumen rating for light output.

What is a Foot-Candle (fc)?

Foot-candles measure the light that actually hits a target area.

One Foot-candle is the amount of light that hits a 1 foot(12”) x 1 foot surface area that is 1 foot away from a candle.

With every light fixture, the important factor is getting the Foot-candles right for the activity occurring under the lights. If there’s “Too Damn Much Light!!!” you have more than you need.

Some Foot-Candle Examples:

• Starlight hitting the ground at night:

.001 fc

• Full Moon’s light on the ground at night:

.01 fc

• Light from a pole mounted light measured on the ground in a Parking Lot:

0.9 – 3.6 fc

• General lighting on warehouse floor:

15 – 30 fc

• Office lighting on a desk:

50 fc

• Assembly Work in a factory: - on the worktable surface:

100 fc

• Complex Assembly, Surgery, Dental Work - on the work surface:

200 fc

• Hockey, Basketball or Football (for TV) - on the playing surface:

125 – 150 fc

Summary: To avoid transforming a customer into King Kong is simple:

1. Determine the type of activity requiring light?

2. Get the Foot-candles right for the activity.

3. Specify fixture that will hit your desired foot candle target.

How far away from that work table or warehouse floor is the fixture?

How far does the light have to travel?

Only THEN can you calculate what Lumens are needed.

The Occupational Safety and Health Administration (OSHA) has recommended Foot-candle rating for different locations.

See OSHA Lighting - 1915.82. LINK

Bill Nagengast, Lighting Engineer

Solas Ray Lighting

Holds over 20 patents in the lighting industry.

www.SolasRay.com

TJ-33 7.12.18