TimberandLight
LED Strip Light Power Supply - Hard Wired (Dimmable)
LED Strip Light Power Supply - Hard Wired (Dimmable)
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These 24V TRIAC Dimmable power supplies work with linear LED ribbon strip or other constant voltage LED luminaires, suitable for indoor use only.
A 20% buffer is recommended when calculating your required power supply wattage to avoid overloading.
Here's how to calculate the correct power supply wattage for your COB LED installation:
Basic Formula: Total Watts Needed = (Watts per meter × Total meters) × Safety Factor
Step-by-Step Calculation:
-
Determine your total length
- Measure how many meters of COB strip you'll be installing
-
Calculate base power requirement
- Multiply: watts per meter × total meters
- Example: 9W/m × 5 meters = 45 watts
-
Add safety margin (20-30%)
- Multiply your base requirement by 1.2
- Example: 45W × 1.25 = 56.25 watts
- Round up to next available power supply size
What is an I.P Rating
IP ratings tell you how well protected your power supply is against dust and moisture - crucial for choosing the right unit for your installation location.
IP Rating Breakdown: The two digits after "IP" indicate protection levels:
- First digit = dust protection (0-6 scale)
- Second digit = water protection (0-8 scale)
IP20 Power Supplies:
- 2 = Protected against objects larger than 12mm (like fingers)
- 0 = NO water protection whatsoever
Best for: Indoor use only in completely dry locations
- Inside cabinets, closets, electrical panels
- Residential indoor installations
- Office environments
- Anywhere moisture will never be present
IP67 Power Supplies:
- 6 = Completely dust-tight
- 7 = Protected against water immersion up to 1 meter deep
Best for: Outdoor and wet location installations
- Exterior building lighting
- Pool/spa areas
- Bathrooms and kitchens
- Basement installations
- Marine applications
- Any location with potential moisture exposure
Key Differences:
IP20:
- Lower cost
- Better heat dissipation (ventilated)
- Smaller, more compact
- Must be installed in protected locations
IP67:
- Higher cost
- Sealed units (may run warmer)
- Larger/bulkier due to weatherproof housing
- Can handle rain, splashing, temporary submersion
Choosing the Right One:
- Always use IP67 if there's ANY chance of moisture contact
- IP20 is fine for completely dry, indoor-only installations
- When in doubt, go IP67 - better safe than dealing with failed power supplies
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