69 lines
2.0 KiB
Markdown
69 lines
2.0 KiB
Markdown
---
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id:
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aliases: []
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title: 2025-12-10
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tags:
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- authorship/original
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- destiny/permanent
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- status/draft
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- type/daily
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---
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# 2025-12-10
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## 2025-12-10 10:45 --- ConEst Lighting Controls Meeting Notes
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#occupational/takeoff #topic/ambiguity #topic/transparency
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### Minutes
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2025-12-10 08:30--10:00
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Objective: Discuss lighting control systems
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A primary reason for the discussion was presented:
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> [!example] ^ex
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> While putting together a large garden style project
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> Bid received a quote for lighting control at over one million dollars.
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> Believing it [[gold-plating|overengineered]],
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> Bid proposed ~$150,000 for lighting control "per code".
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> The contract was awarded on those terms.
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> When the project team received a quote for a "per code" system,
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> the total was ~$600,000.
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Ultimately the responsibility is ConEst's
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to resolve discrepancies between:
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* applicable code
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* design intent
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* Bid proposal intent
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* PDR quote intent
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It was erroneously suggested that lighting control conductors
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may be run with their circuit conductors if both are 600V insulated.[^1]
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[^1]: This is a violation of [[nfpa-70_725_control-circuits#725.136(I) Other Applications.|NEC 725.136(I)(1)]].
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See [[lighting-controls#0-10V Dimming|0-10V Dimming]].
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### My Thoughts
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The lighting control problem is misunderstood.
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It's true that some technical training would be beneficial to ConEst estimators,
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but root of the problem has nothing to do with lighting control.
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When I heard [[#^ex]], where lighting control went wrong
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and costed a job half a million in profit,
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what I took away was that we sold high-risk scope
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without knowing what was required _and without qualification_.
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***
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Others have suggested creating new assemblies grouped by manufacturer,
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which I'm not a fan of.
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While it's true that similar implementations
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_are_ different between manufacturers,
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the differences are trivial for our purposes.
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More to the problem,
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such an arrangement would inevitably lead to confusion
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(i.e. taking off the wrong brand
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because its contents happen to match better in a specific instance).
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