Electrical Thumb Rules-Illumination-(Part-19).
February 15, 2019 2 Comments
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Recommended Lighting Levels For Sports Areas |
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| TYPE OF SPORTS | PRACTIVE LEVEL | MINOR LEAGUE | MAJOR LEAGUE | PROV LEVEL |
| Bowls | 20 lux | 50 lux | 100 lux | 150 lux |
| Tennis | 50 lux | 100 lux | 150 lux | 250 lux |
| Football | 50 lux | 100 lux | 250 lux | 450 lux |
| Cricket Outfield | 50 lux | 100 lux | 250 lux | 450 lux |
| Cricket Pitch | 100 lux | 200 lux | 400 lux | 600 lux |
| Hockey | 50 lux | 100 lux | 250 lux | 350 lux |
| Swimming | 50 lux | 100 lux | 150 lux | 250 lux |
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Industrial & Office Applications Lux Level |
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| WORK AREAS | WORK TYPE | LUX |
| General Engineering | Rough Work | 160 lux |
| General Engineering | Medium Work | 400 lux |
| General Engineering | Fine Work | 800 lux |
| General Engineering | Very Fine Work | 1600 lux |
| Inspection Areas | Rough Work | 160 lux |
| Inspection Areas | Medium Work | 320 lux |
| Inspection Areas | Sub Assemblies | 400 lux |
| Inspection Areas | Fine Work, electric & high precision mechanical | 800 lux |
| Offices | Entrance halls and receptions areas | 160 lux |
| Offices | Conference facilities, general offices, typing and filing | 500 lux |
| Offices | Computer and business machine operation | 630 lux |
| Offices | Drawing Offices | 800 lux |
| Outdoor Areas | Mechanical loading | 10 lux |
| Outdoor Areas | Manual loading | 10 lux |
| Outdoor Areas | Service station forecourts | 160 lux |
| Warehousing | Inactive storage | 20 lux |
| Warehousing | Loading bays and large materials storage | 100 lux |
| Warehousing | Small material storage, packing and dispatch | 200 lux |
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Recommended Lighting Levels |
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| Characteristics of Activity | Representative Activity | Illuminance (lux) |
| Interiors rarely used for visual tasks (no perception of detail) | Cable tunnels, nighttime sidewalk, parking lots | 50 |
| Interiors with minimal demand for visual acuity (limited perception of detail) | Corridors, changing rooms, loading bay | 100 – 150 |
| Interiors with low demand for visual acuity (some perception of detail) | Foyers and entrances, dining rooms, warehouses, restrooms | 200 |
| Interior with some demand for visual acuity (frequently occupied spaces) | Libraries, sports and assembly halls, teaching spaces, lecture theaters | 300 |
| Interior with moderate demand for visual acuity (some low contrast, color judgment tasks) | Computer work, reading & writing, general offices, retail shops, kitchens | 500 |
| Interior with demand for good visual acuity (good color judgment, inviting interior) | Drawing offices, chain stores, general electronics work | 750 |
| Interior with demand for superior visual acuity (accurate color judgment & low contrast) | Detailed electronics assembly, drafting, cabinet making, supermarkets | 1000 |
| Interior with demand for maximum visual acuity (low contrast, optical aids & local lighting will be of advantage) | Hand tailoring, precision assembly, detailed drafting, assembly of minute mechanisms | 1500 -2000+ |
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Interior Light Levels |
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| Environment | Required Light Level |
| Storage Area / Plant Room (minimal movement of people) | 150 – 200 Lux |
| Construction Areas & Loading Bays (minimal perception of detail) | 300 – 500 Lux |
| Factories & Kitchens (higher perception of detail) | 500 – 750 Lux |
| Inspection, Welding, And Machinery (demanding work) | 750 – 1000 Lux |
| Electronics & Textile Production (repetitive detail) | 1000 – 1500 Lux |
| Technical Offices (accurate detail) | 1500 – 3000 Lux |
| Jewelers & Goldsmiths (precision detail) | 3000 + Lux |
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Outdoor Light Levels |
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| Environment | Required Light Level |
| Very Bright Summer Day | Up To 100,000 Lux |
| Overcast Summer Day | 30,000 – 40,000 Lux |
| Floodlit Football Match | 700 – 16,000 Lux |
| Shady Room In Daylight | 250 – 300 Lux |
| Night Light On A Building | 60 Lux |
| Night-Time Urban Street | 10 Lux |
| Night-Time Car Park | 1 Lux |
| Security Floodlights | 700-1300 Lux |
| Shed Lights | 150-300 Lux |
| Lamp Posts | 120-180 Lux |
| Landscape Spotlights | 120 Lux |
| Outdoor Path Lighting | 100 Lux |
| Path lighting. | 100 Lux |
| Landscape Lights | 100-300 Lux |
| Garden lights | 20 Lux |
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Illumination Level |
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| Light levels as per IS 1944 | ||
| Classification of Road | Type of road | illumination (lux) |
| Group A1 | Important traffic routes carrying fast traffic | 30 |
| Group A2 | Other main roads carrying mixed traffic, like main city streets, arterial roads, throughways etc | 15 |
| Group B1 | Secondary roads with considerable traffic like principal local traffic routes, shopping streets etc | 8 |
| Group B2 | Secondary roads with light traffic Important traffic routes carrying fast traffic | 4 |
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Illumination Level |
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| Roadway Classification |
Average Maintained Illuminance | ||
| High lux | Medium lux | Low lux | |
| Major/Major | 34 | 26 | 18 |
| Major/Collector | 29 | 22 | 15 |
| Collector/Collector | 24 | 18 | 12 |
| Collector/Local | 21 | 16 | 10 |
| Local/Local | 18 | 14 | 8 |
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Interior Lighting Level |
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Chartered Institute of Building Services Engineers CIBSE Part 2 (2002) |
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| Illuminance (lux) | Activity | Area |
| 100 | Casual seeing | Corridors, changing rooms, stores |
| 150 | Some perception of detail | Loading bays, switch rooms, plant rooms |
| 200 | Continuously occupied | Foyers, entrance halls, dining rooms |
| 300 | Visual tasks moderately easy | Libraries, sports halls, lecture theatres. |
| 500 | Visual tasks moderately difficult | General offices, kitchens, laboratories, retail shops. |
| 750 | Visual tasks difficult | Drawing offices, meat inspection, chain stores. |
| 1000 | Visual tasks very difficult | General inspection, electronic assembly, paintwork, supermarkets. |
| 1500 | Visual tasks extremely difficult | Fine work and inspection, precision assembly. |
| 2000 | Visual tasks exceptionally difficult | Assembly of minute items, finished fabric inspection. |
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Illumination levels of Switch Yard |
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AS/NZS 1158.3.1 |
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| Switchyard area lighting targets | Illuminance (lx) |
| HV areas including any overhead line road crossings and any access path zone type infrastructure | 10 |
| Non-HV areas and general open areas | 5 |
| Isolated areas such as back of buildings, corners of switchyards away from HV Equipment | 2 |
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Sub Station Light Levels |
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WEST BENGAL STATE ELECTRICITY TRANSMISSION COMPANY LIMITED |
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| Environment | Required Light Level |
| CONTROL ROOM / Switch gear Room | 300 |
| Battery Room | 150 |
| Communication Room | 300 |
| Offices/Engineers’ Room/Other Office Room | 300 |
| Toilet | 100 |
| Outdoor Switchyard area including road | 30 |
| Stairs | 100 |
| Corridor | 100 |
| Road within campus including colony area | 30 |
| Maintenance room | 150 |
| Any other spot where high level of illumination required | 150 |
| Dormitory & ‘C’ type quarters | 150 |
| Auxiliary Buildings like Pump room and other houses | 150 |
| ACDB- DCDB room/Store / Store Office | 150 |
| Conference room | 300 |
| Tiffin room/Kitchen | 150 |
| GIS Hall | 150 |
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Sub Station Light Levels |
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ODISHA POWER TRANSMISSION CORPORATION LIMITED |
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| Environment | Required Light Level |
| Control Room | 350 |
| PLCC Room | 300 |
| LT Room | 150 |
| Charger Room | 150 |
| Cable Gallery | 150 |
| Heating Plant | 100 |
| Battery Room | 100 |
| Computer Room | 300 |
| Entrance lobby | 150 |
| Corridor and landing | 150 |
| Conference and display | 300 |
| Rest Room | 250 |
| AHU Room | 100 |
| DG Set Building | 150 |
| Fire Fighting Pump House | 150 |
| Switchyard – Main equipment | 50 |
| Switchyard – general equipment and balance | 30 |
| Street/Road | 30 |
JIGNESH PARMAR
Dear Sir,
kindly suggest the backup standards for the safety ground clearance for outdoor swyd (i.e for 66kV you have mentioned 4000mm) Please help on the same.
Thanks and Regards
Renga Ramanujan C
Thanks you very much Jignesh.Parmar