From a8b5b79942108e5422481e5f6f3822d9d117f927 Mon Sep 17 00:00:00 2001 From: Zane Meyers Date: Thu, 9 Oct 2025 13:25:22 -0400 Subject: [PATCH] vault backup: 2025-10-09 13:25:21 --- .../plugins/recent-files-obsidian/data.json | 128 +++++++++--------- README.md | 5 + conductor-sizing.md | 109 +++++++++------ image.png | Bin 515 -> 0 bytes me.md | 2 +- windows-setup.md | 59 ++++++++ 6 files changed, 197 insertions(+), 106 deletions(-) delete mode 100644 image.png create mode 100644 windows-setup.md diff --git a/.obsidian/plugins/recent-files-obsidian/data.json b/.obsidian/plugins/recent-files-obsidian/data.json index 5401b02..570dd8f 100644 --- a/.obsidian/plugins/recent-files-obsidian/data.json +++ b/.obsidian/plugins/recent-files-obsidian/data.json @@ -1,33 +1,81 @@ { "recentFiles": [ { - "basename": "fire-alarm", - "path": "fire-alarm.md" - }, - { - "basename": "hvac-calculations", - "path": "hvac-calculations.md" - }, - { - "basename": "alternating-current", - "path": "alternating-current.md" - }, - { - "basename": "conductor-sizing", - "path": "conductor-sizing.md" + "basename": "windows-setup", + "path": "windows-setup.md" }, { "basename": "full-takeoff", "path": "full-takeoff.md" }, { - "basename": "electrical", - "path": "electrical.md" + "basename": "favorite-quotes", + "path": "favorite-quotes.md" }, { "basename": "README", "path": "README.md" }, + { + "basename": "me", + "path": "me.md" + }, + { + "basename": "strategy", + "path": "strategy.md" + }, + { + "basename": "ai-in-estimating", + "path": "ai-in-estimating.md" + }, + { + "basename": "alternating-current", + "path": "alternating-current.md" + }, + { + "basename": "area-of-refuge", + "path": "area-of-refuge.md" + }, + { + "basename": "assembly-objects", + "path": "assembly-objects.md" + }, + { + "basename": "assembly-philosophy", + "path": "assembly-philosophy.md" + }, + { + "basename": "automating-estimating-project-creation", + "path": "automating-estimating-project-creation.md" + }, + { + "basename": "automating-pdf-annotation", + "path": "automating-pdf-annotation.md" + }, + { + "basename": "conductor-sizing", + "path": "conductor-sizing.md" + }, + { + "basename": "gold-plating", + "path": "gold-plating.md" + }, + { + "basename": "accubid-setup", + "path": "accubid-setup.md" + }, + { + "basename": "hvac-calculations", + "path": "hvac-calculations.md" + }, + { + "basename": "fire-alarm", + "path": "fire-alarm.md" + }, + { + "basename": "electrical", + "path": "electrical.md" + }, { "basename": "stochastic-branch-takeoff", "path": "stochastic-branch-takeoff.md" @@ -108,14 +156,6 @@ "basename": "this-notebook", "path": "this-notebook.md" }, - { - "basename": "accubid-setup", - "path": "accubid-setup.md" - }, - { - "basename": "me", - "path": "me.md" - }, { "basename": "material-pricing", "path": "material-pricing.md" @@ -136,14 +176,6 @@ "basename": "feeders", "path": "feeders.md" }, - { - "basename": "assembly-objects", - "path": "assembly-objects.md" - }, - { - "basename": "automating-estimating-project-creation", - "path": "automating-estimating-project-creation.md" - }, { "basename": "project-info", "path": "project-info.md" @@ -164,41 +196,9 @@ "basename": "90-day-performance-review", "path": "90-day-performance-review.md" }, - { - "basename": "favorite-quotes", - "path": "favorite-quotes.md" - }, { "basename": "open-problems-in-estimating", "path": "open-problems-in-estimating.md" - }, - { - "basename": "location-vs-scope", - "path": "Excalidraw/location-vs-scope.md" - }, - { - "basename": "company-switch", - "path": "company-switch.png" - }, - { - "basename": "pathfinding", - "path": "pathfinding.md" - }, - { - "basename": "gut-feel", - "path": "gut-feel.md" - }, - { - "basename": "estimating-methodologies", - "path": "estimating-methodologies.md" - }, - { - "basename": "getting-historical-pricing", - "path": "getting-historical-pricing.md" - }, - { - "basename": "functional-labor-factoring", - "path": "functional-labor-factoring.md" } ], "omittedPaths": [], diff --git a/README.md b/README.md index ca29e7f..3558d47 100644 --- a/README.md +++ b/README.md @@ -28,3 +28,8 @@ Novel syntax implemented by Obsidian plugins should be avoided. All notes are located in the main directory. [[tags]] are used for filtering. + +## Setup from Scratch + +For steps to clone this vault +and setup Git see [[windows-setup]]. diff --git a/conductor-sizing.md b/conductor-sizing.md index 443b585..d415e88 100644 --- a/conductor-sizing.md +++ b/conductor-sizing.md @@ -115,6 +115,14 @@ either for spec requirements or conduit fill considerations. ## Voltage Drop +> [!info] Ohm's Law +> +> $$ +> V = I \times R, \quad R = \frac{ V }{ I }, \quad I = \frac{ V }{ R } +> $$ + +### Step 1: Effective Impedance $Z$ + $$ Z = R \cos(\theta) + X \sin(\theta) $$ @@ -125,47 +133,7 @@ where * $X$ = Reactance * $\theta$ = Power factor angle = $\arccos(PF)$ -> [!info] 1-Phase, Line to Neutral Voltage Drop -> -> $$ -> \Delta V_{LN} = I \times Z \times 2L -> $$ - -> [!info] 1-Phase, Line to Line Voltage Drop -> -> $$ -> \Delta V_{LL} = \sqrt{3} \times I \times Z \times 2L -> $$ - -> [!info] 3-Phase Voltage Drop -> -> $$ -> \Delta V_{3\phi} = \sqrt{3} \times I \times Z \times L -> $$ - -where -* $\Delta V$ = Voltage drop in volts ($V$) -* $I$ = Current in amperes ($A$) -* $L$ = Length of wire one way in feet ($\text{ft}$) - -It is often more useful to know the maximum length -a certain wiring configuration is suitable for. - -$$ -L = \frac{ \Delta V }{ I \times M } \times \frac{1}{Z} -$$ - -> [!info] Ohm's Law -> -> $$ -> V = I \times R, \quad R = \frac{ V }{ I }, \quad I = \frac{ V }{ R } -> $$ - -> [!important] -> "Current" is not the OCPD rating, -> but the actual load. - -## Parallel Runs +#### Parallel Runs The equivalent resistance of parallel resistances is given by @@ -183,6 +151,65 @@ $$ \end{align*} $$ +### Step 2: Voltage Drop + +> [!important] +> This section assumes a 3-phase +> 208Y/120V or 480Y/277V voltage system + +> [!info] 3-Phase Voltage +> $$ +> V_{LL} = \sqrt{3} \times V_{LN}, \quad V_{LN} = \frac{V_{LL}}{\sqrt{3}} +> $$ + +3% allowable voltage drop for a 120V line-to-neutral load: + +$$ +\text{Max} \Delta V = 0.03 \times 120 \text{V}_{LN} = 3.6 \text{V}_{LN} +$$ + +3% allowable voltage drop for a 208V line-to-line load: + +$$ +\text{Max} \Delta V = 0.03 \times 208 \text{V}_{LL} = 6.24 \text{V}_{LL} +$$ + +#### Line to Neutral Loads + +$$ +\Delta V_{LN} = I \times Z \times 2L +$$ + +#### Line to Line Loads + +$$ +\Delta V_{LL} = \sqrt{3} \times \left( I \times Z \times 2L \right) +$$ + +#### 3-Phase Loads + +$$ +\Delta V_{3\phi} = \sqrt{3} \times \left( I \times Z \times L \right) +$$ + +where +* $\Delta V$ = Voltage drop in volts ($V$) +* $I$ = Current in amperes ($A$) +* $L$ = Length of wire one way in feet ($\text{ft}$) + +> [!important] +> "Current" is not the OCPD rating, +> but the actual load. + +*** + +It is often more useful to know the maximum length +a certain wiring configuration is suitable for. + +$$ +L = \frac{ \Delta V }{ I \times M } \times \frac{1}{Z} +$$ + ## Transformers $$ diff --git a/image.png b/image.png deleted file mode 100644 index 4e0c682d6100467a9f4773fc25899cfbef6e0375..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 515 zcmV+e0{s1nP)&wEZWv?r!*mlo_Buf~*RtsXOT3IP)8zQqs~C8wCOK-#TZ7kT}$S{;d2 zcNQ4U1Q~i^fUe;VqIyUYU{y04BV^ZFa}xb~-Xb-2v}2vuGJGc4`aJ4_{t=D1r!sI6 z@#2ep79wsm2y-IjbL%&v$c#mG^!NON6x7|FL>=N zecp^ZU5e?+@k?8~$|_qObq}002ovPDHLk FV1iFn@#_Ep diff --git a/me.md b/me.md index 846992c..bd386a5 100644 --- a/me.md +++ b/me.md @@ -65,4 +65,4 @@ Others with as much free time as me tend to spend it exercising. I want to be involved construction estimating for the rest of my working life. Current discourse on the subject is self-similar and sanitized. I'd like to be known as an innovator in [[estimating-philosophy]], -and for solving some of its [[open-problems-in-estimating]]. +and for solving some of its [[open-problems-in-estimating|open problems]]. diff --git a/windows-setup.md b/windows-setup.md new file mode 100644 index 0000000..9994917 --- /dev/null +++ b/windows-setup.md @@ -0,0 +1,59 @@ +# Windows Setup + +## Clone This Vault + +1. Create a [GitHub](https://github.com/) + account if you don't have one already. + +2. Install [Git](https://git-scm.com/) + + ``` + winget install Git.Git + ``` + +3. Clone this repo + + ``` + git clone https://github.com/ZaneMeyers/zmVault + ``` + +> [!important] +> If you're reading this, +> you probably have push access to this repo. +> Please do me a favor and don't use it. +> It won't be destructive, but it may be annoying. + +If you make unintended changes to this vault: + +``` +cd zmVault +git reset --hard +``` + +## Setup Obsidian + +1. Download and install [Obsidian](https://obsidian.md/) + +## Create Your Own Vault + +### Create a GitHub Repository + + + +### Create and Push your Vault + +``` +mkdir myVault +git init +git add README.md +git commit -m "first commit" +git branch -M main +git remote add origin https://github.com/ExampleName/myVault.git +git push -u origin main +``` + +### Set Up Your Vault + +Add and enable the Git Community Plugin. + +