Construction Cost of Electrical System in Warehouse Rental Projects - Happy Meebaan

Construction Cost of Electrical System in Warehouse Rental Projects - Happy Meebaan

This article discusses the cost of electrical system installation in warehouses, factories, or warehouse rental projects. The actual cost depends on the project's objectives and electrical specifications, but the following is a general breakdown for basic understanding.


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Electrical System Installation in Warehouses: Safe & Efficient
Proper electrical planning is critical in warehouses, directly affecting safety, machine operation, and long-term energy costs. A well-planned system enhances both energy efficiency and fire risk mitigation.

1. Electrical Design by Licensed Engineer
Design must be handled by certified electrical engineers to ensure correct power load distribution, appropriate breaker placement, and integration of safety devices.

2. Use of Energy-Saving Lighting
LED T8 or T5 tubes offer high brightness, low power consumption, and longer lifespan than fluorescent or incandescent lights.

3. Standardized Electrical Materials
Wiring, breakers, main panels, and outlets must meet Thai Industrial Standards (TIS) to ensure safety and durability.

4. Wiring in Conduits
Use EMT or PVC conduits to protect wires from moisture, rodents, and abrasion—ideal for open-roof or dusty warehouses.

5. Overload & Leakage Protection
Install main and sub-breakers suitable for each zone, and use RCD/ELCB units in frequently used areas like offices or staff rooms.

6. Timer & Motion Sensor Controls
Auto-control systems like motion sensors and timers help minimize electricity use, especially in low-traffic areas like corridors and restrooms.

7. Regular Inspection & Maintenance
At least once a year, inspect wiring, breaker function, grounding, and thermal conditions to prevent accidents.


Installation Steps for Light Poles in Warehouse Rental Projects
Installing exterior light poles improves project safety, efficiency, and professional appearance.

1. Survey & Lighting Layout
Design lighting points to cover all key areas such as entrances, walkways, parking lots, and waste zones.

2. Permits (If Needed)
If connecting to public utilities, approval from local authorities (e.g., municipality, PEA) may be required.

3. Foundation Preparation
Dig holes 80–120 cm deep based on soil and pole height. Reinforce with rebar and concrete anchors.

4. Pole Installation
Lift poles securely into place with cranes. Anchor and level them properly.

5. Electrical Wiring
Route cables from the main panel to each pole using PVC or HDPE conduit (underground). Include protection systems like breakers and photocell sensors.

6. System Testing
Test illumination, breaker functionality, and grounding. Record data for future maintenance.

Tips:

Use LED street/flood lights for energy savings.
Separate lighting circuits from operational circuits for better control.
Install backup lighting at critical points (entrance, CCTV zones).

Estimated Electrical Installation Cost in Warehouses
The following unit prices are averages and may vary depending on system complexity, equipment quantity, building height, and safety standards required.

Work Description
Estimated Cost (THB/sq.m.)
Basic electrical system (wiring + outlets + switches + LED)
350 – 500 THB/sq.m.
Industrial system (add fans, machine loads, main lines)
500 – 750 THB/sq.m.
Smart system (sensors, timers, automation)
700 – 950 THB/sq.m.
Special systems (UPS, ELCB, control panel)
Quoted separately
Cost Factors:
Building height (higher = more equipment & labor)
Number of outlets/lights per area
Distance from main panel to usage points
Conduit method (PVC, EMT, underground)
Client-specified safety/industrial standards
Example Estimate:
Warehouse Area = 1,000 sq.m.
Basic electrical setup = 400 THB/sq.m.
Estimated cost: 1,000 x 400 = 400,000 THB (excluding MDB, PEA application, or backup systems)


Estimated Cost for Main Electrical Line Installation
Required Info:
Distance from transformer/main power to building
Total load demand (kW)
Cable routing method (surface/underground)
Cable size (e.g., 25, 35, 50, 70, 95 sq.mm)
Cable Type & Routing
Estimated Cost (THB/meter)
2x35 + Ground, PVC conduit
550 – 750 THB/m
4x35 + Ground, EMT conduit
850 – 1,200 THB/m
4x50 + Ground, steel conduit
1,200 – 1,500 THB/m
4x70–95, HDPE underground
1,800 – 2,800 THB/m
MDB (400–630A) incl. MCCB
45,000 – 95,000 THB/unit
PEA Load Application (20–50kW)