Category Archive for: «Lighting»

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7 Key Steps In Lighting Design Process

Structured Design Process // To achieve the best overall outcome in a lighting installation, it is important to avoid the tendency of rushing straight into luminaire selection before determining more broadly what is required from the system. The use of a structured design process helps to avoid this. The key steps in the design process […]

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7 Energy-Efficiency Improvement Opportunities In Lighting System

Lighting in industrial facilities There are a lot of opportunities to optimise lighting system in (almost) any industrial facility. Seven practical energy-efficiency opportunities to reduce energy use cost-effectively are given below: Lighting controls Replace T-12 tubes by T-8 tubes Replace mercury lights with metal halide or high pressure sodium lights Replace metal halide (HID) with high-intensity fluorescent […]

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Let’s develop the simple PLC program for lighting control system

Lighting control system A lighting control system is to be developed. The system will be controlled by four switches, SWITCH1, SWITCH2, SWITCH3, and SWITCH4. These switches will control the lighting in a room based on the following criteria: Any of three of the switches SWITCH1, SWITCH2, and SWITCH3, if turned ON can turn the lighting […]

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8 NEC Basic Feeder Circuit Sizing Requirements

Feeder circuit loads Once the branch circuit loads are calculated, the feeder circuit loads may be calculated by applying demand factors to the branch circuit loads. General Lighting Loads (Article 220.42) Show window or track lighting (Article 220.43) Receptacles in other than dwelling units (Article 220.44) Motors (Article 220.50) Fixed Electric Space Heating (Article 220.51) […]

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An example of calculating the number of indoor lighting fixtures

Input information These are the input data for the following calculation: An office area has length: 20 meter; width: 10 meter; height: 3 meter. The ceiling to desk height is 2 meters. The area is to be illuminated to a general level of 250 lux using twin lamp 32 watt CFL luminaires with a SHR […]

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Visual Tasks of Typical Living Room Lighting

Flexible Lighting Design Solution Most living rooms require flexible lighting design solutions because they serve a broad variety of changing functions. The lighting in a typical living room should comfortably serve small group conversation, larger social gatherings that include casual eating and drinking, and more solitary activities such as reading, music listening, and TV viewing. […]

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Hospitality lighting design, Why it matters

Achieving Required Lighting Level The hospitality business involves serving people and giving them enjoyment. From restaurants to hotels, resorts, and even theme parks, facilities are designed with the intent of transporting guests from the world of the ordinary to a special time and place. Lighting design for hospitality projects is, along with retail lighting, the […]

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Brightness, Lamp Life and Efficiency of LED Fixtures

Introduction A typical LED fixture comprises four major component parts: an LED emitter, the fixture’s heat sink, driver and dimming control, and augmenting optics. The emitter includes the die, a thermal heat sink, lens, and outer package (Figure 1). The die is the actual LED chip within the emitter. The color of the light is […]

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Lighting Circuits Connections for Interior Electrical Installations (3)

Continued from 2nd part: Lighting Circuits Connections for Interior Electrical Installations (2) Emergency lighting circuits The main reason for installing an emergency lighting system is to enable the building to meet fire safety legislation in a way that is visually acceptable and meets the user’s needs for ease of operation and maintenance. Consequently it is […]

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Lighting Circuits Connections for Interior Electrical Installations (2)

Continued from first part: Lighting Circuits Connections for Interior Electrical Installations Introduction In modern internal electrical installations, domestic and professional, there is a need for lighting installations in staircases and installation of emergency lighting that will operate in the event of interruption of electricity supply from the grid. The automatic staircase timer abolished Aller – Retour […]

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