Below is a START-TO-FINISH Electrical Material Requirement Guide for Residential & Commercial Buildings.
This shows what material is needed at each project stage, from empty site → final handover.
It is suitable for site engineers, contractors, storekeepers, and training use.
ELECTRICAL MATERIAL REQUIREMENTS (Complete – Start to Finish) :::----
🔹 STAGE 1: PRE-INSTALLATION (Planning & Setup) ::---
A. Documents & Planning
B. Electrical layout drawings
C. Load calculation sheet
D. Panel schedule
E. BOQ (Bill of Quantities)
F. Authority approvals
G. Temporary Site Power
H. Temporary DB
I. Industrial socket & plug
J. Extension cables
K. Earthing for temporary supply.
🔹 STAGE 2: CONCEALED / ROUGH-IN WORK (Before plaster & finishing) Conduits & Accessories ::----
Residential :---
1. PVC conduits (20mm / 25mm)
2. PVC bends, couplers
3. Junction & switch boxes
4. Fan boxes.
Commercial :---
1. GI conduits
2. Cable trays (ladder/perforated)
3. Trunking (PVC / GI)
4. Flexible conduits
5. Fixing Accessories
6. Saddles & clamps
7. Screws, rawl plugs
8. Binding wire
9. Adhesive / solvent cement.
🔹 STAGE 3: EARTHING & SAFETY SYSTEMS :::----
A. Earthing Materials :-
1. Earth electrode (plate / rod)
2. Earth pit chamber & cover
3. Earthing strip (GI/Copper)
4. Green earthing wire
5. Earth clamps & bolts.
B. Commercial Additional :-
1. Lightning arrester
2. Down conductor
3. Surge protection accessories.
🔹 STAGE 4: WIRING (CABLE PULLING) :::---
A. Residential Wiring ::---
1. Copper PVC wires (1.0 / 1.5 / 2.5 / 4 sq.mm)
2. Flexible wires
3. Service cable
4. Identification ferrules.
B. Commercial Wiring ::---
1. XLPE cables
2. Armoured power cables
3. Control cables
4. Cable glands & lugs
5. Cable markers & tags.
🔹 STAGE 5: DISTRIBUTION BOARDS & PANELS :::----
A. Residential ::---
1. SPN Distribution Board
2. MCBs
3. RCCB / RCBO
4. Main isolator
5. Neutral & earth bars.
B. Commercial ::---
1. TPN DB
2. MCCB
3. ELCB
4. SPD (Surge Protection Device)
5. Main LT Panel
6. Sub-distribution panels.
🔹 STAGE 6: SWITCHES, SOCKETS & POINTS :::----
A. Residential ::---
1. Modular switches (6A / 16A)
2. Socket outlets
3. Switch plates
4. Fan regulators
5. Doorbell switches.
B. Commercial ::---
1. Heavy-duty switches
2. Industrial sockets
3. Isolator switches
4. Floor boxes.
🔹 STAGE 7: LIGHTING & FIXTURES :::----
A. Residential ::---
1. LED bulbs
2. LED downlights
3. Tube lights
4. Decorative fixtures
5. Outdoor lights.
B. Commercial ::---
1. LED panel lights
2. High-bay / low-bay lights
3. Emergency & exit lights
4. Flood lights.
🔹 STAGE 8: POWER EQUIPMENT & APPLIANCE POINTS :::----
A. Residential ::---
1. Ceiling fans
2. Exhaust fans
3. AC points with isolators
4. Geyser points
5. Kitchen appliance points.
B. Commercial ::---
1. HVAC power connections
2. Motor power outlets
3. Control switches
4. Starter panels.
🔹 STAGE 9: LOW-VOLTAGE & SPECIAL SYSTEMS :::---
A. Residential (Optional) ::---
1. CCTV cameras
2. Doorbell
3. TV & internet outlets.
B. Commercial (Mandatory) ::---
1. Fire alarm panel
2. Smoke / heat detectors
3. Manual call points
4. Access control system
5. Data cabling (CAT6)
6. PA system.
🔹 STAGE 10: BACKUP & RENEWABLE POWER :::----
A. Residential ::---
1. Inverter
2. Batteries
3. Changeover switch
4. Solar inverter (if applicable)
5. Solar panels.
B. Commercial ::---
1. Generator
2. UPS system
3. ATS panel
4. Generator control panel.
🔹 STAGE 11: TESTING, COMMISSIONING & SAFETY :::---
1. Testing Instruments
2. Multimeter
3. Clamp meter
4. Insulation resistance tester (Megger)
5. Earth resistance tester.
Final Materials ::---
1. Danger boards
2. Circuit identification labels
3. Panel schedules
4. Insulation tape
5. Cable ties.
🔹 STAGE 12: HANDOVER & MAINTENANCE :::----
1. Documentation
2. As-built drawings
3. Test reports
4. Warranty cards
5. Operation & maintenance manuals
6. Spare Materials
7. Spare MCBs
8. Extra lamps
9. Fuses
10. Touch-up accessories.
✅ SITE ENGINEER CHECK :::----
✔ Rough-in → Wiring → Panels → Fixtures → Testing
✔ Never energize before earthing & testing
✔ Maintain material issue & test records.
