Nung tinignan mo ba ang panel box sa bahay mo at naisip mo kung sakto ba ang mga sukat ng circuit breaker at kable na naka-install sa bahay niyo? Gumawa ako ng isang halimbawa, para sa isang typical na 40 square meter na bahay na may typical na electrical load requirement. Kung may katanungan ka, maaari kang mag message dito sa page ko. DESIGN ANALYSIS OF A 40 SQM RESIDENTIAL BUILDING Design consideration based on the typical load of a common household. 1. REQUIREMENTS a. Lighting b. Convenience Outlet/Receptacle Appliances c. Refrigerator d. Washing Machine e. Air Conditioning Unit 2. GENERAL LIGHTING AND RECEPTACLE = 40SQM x 24VA/SQM = 960VA PROVIDE: 2-20A, 2-WIRE LIGHTING AND RECEPTACLE BRANCH CIRCUIT USE: 2-2.0mm2 THHN/THWN 3. SMALL APPLIANCE LOADS Refrigerator Load @ 1,500VA Laundry Equipment @ 1500VA PROVIDE: 2-20A, 2-WIRE SMALL APPLIANCE BRANCH CIRCUIT USE: 2-2.0mm2 THHN/THWN Sub-total = 3,000VA Application of Demand factor First 3,000VA @ 100% remainder at 35% Total Lighting, Receptacle and Small Appliance Loads = 960VA + 3,000VA = 3,960VA = 3,000 + (960*35%) = 3,336VA 4. Other Loads 1HP Air Con @ 1,840VA PROVIDE: 1-20A, 2-WIRE ACU BRACH CIRCUIT USE: 2-2.0mm2 THHN/THWN TOTAL DEMAND LOAD = 3,336VA + 1,840VA = 5,176VA CIRCUIT REQUIREMENTS: 5 – 20A, 2-POLE, 230 VOLTS MINIATURE CIRCUIT BREAKER SIZING OF SERVICE ENTRANCE CONDUCTOR = (5,176VA + (1,840VA x 25%))/230 = 24.50A USE: 2-8.0mm2 + 1-5.5mm2 THHN/THWN CONDUCTORS SIZING OF MAIN SERVICE EQUIPMENT = (5,176VA + (1,840VA x 1.5%))/230 = 34.50A USE: ONE-40A, 2 POLE, 230V MINIATURE CIRCUIT BREAKER #electricalcontractor #electricaltips #electricalwork #electricalengineering #electricaldesign #electrical #StarsEverywhere #fypシ゚viral #fypシ゚