Selection Know-how
W150 to W75 Wall Washer Replacement Guide
Replacing a W150 installation is not a like-for-like swap. What the 148 mm body hides, what the 75 mm W75 body exposes, and the checks to run before ordering.
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Technical guides, industry standards, product selection, lighting design and project analysis.
Selection Know-how
Architectural Linear Lighting: 7 Facade Applications
The seven ways a linear fixture can join a building: roof line, floor band, mullion reveal, grille, stone facade, entrance and tower crown - each with the mounting detail and the project that proves it.
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Selection Know-how
Hotel Facade Lighting: Window Spill & Integration
How to zone hotel facade lighting to keep guest windows dark: spandrel grazing cutoff, 32 mm curtain-wall cavity mounting and late-night curfew control.
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Case Studies
Fujiang Bridge Night Lighting, Deconstructed
A 603 m tied-arch bridge is not lit by one luminaire but by five separate jobs: the arch expresses volume, the hangers rhythm, the girder a continuous edge, the piers an anchor, and 2,637 guardrail luminaires serve the deck. Read against the design documents and the as-built schedule.
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Selection Know-how
Bridge Guardrail Lighting: Glare Control at a 1.2 m Mounting Height
Guardrail-mounted luminaires sit at driver eye level, so glare becomes an optical problem rather than a matter of aiming. Photometry, mounting geometry and installation records from the 603 m Fujiang Bridge.
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technical issues
DMX Fixture Commissioning: 10 Field Faults and a Practical Troubleshooting Sequence
A field guide to DMX fixture commissioning for outdoor LED lighting: diagnose 10 common faults, from no response and flicker to termination and addressing.
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Process Experience
Optics First for Outdoor Architectural Lighting
Brightness is not the same as correct light. Distribution, aiming, cutoff, and commissioning decide whether façades work at night.
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technical issues
Why Outdoor LED Housings Need Wet-Adhesion Thinking (Not Only Cross-Cut)
Why Outdoor LED Housings Need Wet-Adhesion Thinking (Not Only Cross-Cut) Outdoor Linear Lighting Solutions for Architecture and Infrastructure Category:Materials & Finishes Updated:Sep 5, 2026 Read:~7–8 min Print A dry cross-cut pass does not prove wet service on outdoor façades and bridges—ask for wet-adhesion thinking too. The failure that dry tests miss On outdoor façades and […]
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Process Experience
Gasket Material Selection and Compression Design — The First Line of Defense in Outdoor Luminaire Waterproofing
Gasket Material Selection and Compression Design — The First Line of Defense in Outdoor Luminaire Waterproofing Summary of learnings derived from over 800 customer complaint‑driven improvements on the TPKproduct: waterproofing principles for rubber gaskets, rationale for using fumed silica gel, plus design considerations for gasket compression ratio, gland grooves and tolerances. Category:Waterproof EngineeringUpdated:Aug 23,2026Read:14 min […]
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Selection Know-how
LED Bridge Lighting — Engineering Specifications, IP Ratings and System Design
LED Bridge Lighting — Engineering Specifications, IP Ratings and System Design How to specify IP ratings, cold-climate requirements, control protocols, fixture types and surge protection for bridge lighting. Category:Bridge LightingUpdated:May 9,2026Read:12 min Print Bridge lighting is one of the most demanding applications in outdoor architectural LED engineering. Fixtures face road spray, river moisture, thermal cycling, […]
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Selection Know-how
IP65 vs IP67 vs IP68 — Which Rating Do You Actually Need?
IP65 vs IP66 vs IP67 vs IP68: Which Rating Do LED Wall Washers Need? An engineering guide to selecting water-ingress protection for outdoor architectural lighting. Category:IP RatingUpdated:Oct 4,2026Read:11 min Print Match the tested protection to the exposure: IP65 or IP66 for the relevant jet-water conditions, IP67 for temporary immersion, and IP68 for declared continuous-immersion conditions. […]
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technical issues
How to Calculate LED Wall Washer Spacing and Setback Distance
Learn how to calculate LED wall washer spacing, fixture setback and beam angle for uniform facade lighting, with practical IES and DIALux examples.
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Industry Standard Interpretation
ETL, CE and IP67 — A Practical Guide to LED Lighting Certifications for International Projects
ETL, CE and IP67 — A Practical Guide to LED Lighting Certifications for International Projects What ETL, UL, CE and IP ratings actually mean, which markets require which certification, and how to use certificates in a project submission. Category:CertificationUpdated:Apr 23,2026Read:9 min Print Specifying certified LED fixtures is not bureaucracy — it is the difference between […]
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Selection Know-how
DMX512 vs DALI vs 0-10V — Choosing the Right Control Protocol
DMX512 vs DALI vs 0-10V — Choosing the Right Control Protocol Three control protocols, three very different use cases — and how to choose before it costs you money. Category:Control SystemsUpdated:Apr 20,2026Read:8 min Print Three control protocols, three very different use cases. The wrong choice costs money, limits functionality and creates integration problems that are […]
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