Working Drawings Explained Slowly | Orthographic Views, Lines & Scale | Red Seal Electrical Level 1

Why can’t you measure a picture of a part and build it? This slow, step-by-step lesson shows how working drawings turn an object into flat views you can build from, with a glass box that unfolds, the alphabet of lines, drawing scale and a full walk-through of a real detail drawing. Made for apprentices who find this stuff hard. We go slow, one step at a time, and you can SEE the current moving in every circuit. Pause any time. 📘 WHAT YOU WILL LEARN • The three pictorial drawings: oblique, isometric and perspective • Why you should never take sizes off a pictorial • Orthographic projection: the glass box and the standard view layout • Top view above the front, right side view to the right • The alphabet of lines: visible, hidden, centre, dimension, extension, leader, section and break lines • How to read a scale (first number = drawing, second = real object) • Size dimensions, location dimensions and notes • Working drawing sets, detail drawings and assembly drawings • Reading a real electrical sheet: title block, “as noted” scales and grid lines ✏️ PRACTICE PROBLEMS IN THIS VIDEO • Read a detail drawing: title block 1:5, plate 300 × 200 mm, holes 40 mm in from each edge, 40 + 220 + 40 = 300 mm, 4 holes Ø16 • Scale check: 60 mm on paper × 5 = 300 mm • Your turn: 30 mm on a 1:20 drawing → 30 × 20 = 600 mm • Name the lines: thick solid = visible edge, thin dashes = hidden edge, long-short dashes = centre line, extension line • On a 1:50 drawing the 1 stands for the drawing • Front face true shape with depth at 45° = oblique • Real sheet: 3/32" = 1'-0" → 12 ÷ 3/32 = 128, so 1:128 • Real detail: 1/4" = 1'-0" → 12 ÷ 1/4 = 48, so 1:48 ⏱️ CHAPTERS 0:00 The problem 0:47 Pictures and views 2:18 Lines and scale 3:30 Worked example 4:27 Your turn 5:22 Watch out 5:45 On the job 8:07 Check yourself 8:37 Recap 💡 HOW TO STUDY WITH THIS VIDEO 1. Watch once without writing anything. 2. Watch again and copy the math board on the right, line by line. 3. At every "Pause and try it" card, stop the video and do it yourself first. 4. Come back tomorrow and redo the practice problems from memory. ➡️ NEXT VIDEO: Electrical Diagrams 🔗 USEFUL LINKS Apprenticeship and certification in BC: SkilledTradesBC @SkilledTradesBC Electrical safety and permits in BC: Technical Safety BC @technicalsafetybc4449 Instagram: @skilledtradesbc @technicalsafetybc X: @skilledtradesbc Comment below with the part that confused you most. I read them and it helps decide the next video. ⚠️ Study material only. Always follow the current Canadian Electrical Code, your local authority, your employer's procedures and your instructor. Work on live equipment only if you are trained, authorized and wearing the right PPE. This channel is independent and is not affiliated with or endorsed by SkilledTradesBC, Technical Safety BC, CSA Group or the Red Seal Program. #WorkingDrawings #OrthographicProjection #HowToReadBlueprints #BlueprintReadingForElectricians #AlphabetOfLines #DrawingScale #IsometricDrawing #ObliqueDrawing #DetailDrawing #AssemblyDrawing #ElectricianApprentice #FirstYearElectrician #RedSealElectrical #RedSealExamPrep #ElectricalApprenticeshipCanada #RedSealPrep #Electrician #ElectricalApprentice #RedSeal #ElectricalTheory #Apprenticeship #SkilledTrades #TradesCanada #BCTrades #ElectricalTraining #LearnElectrical #ElectricianLife #ElectricalEngineering #TradeSchool #Level1Electrical