New to this stuff. Went to Home Depot for a power cord wasn't sure which was sufficient enough. 13 amp 125volt or 15 amp 125volt?

Either cord will work - the unit has a rated output of 180 watts and is protected for overload. If you hate math - watts=volts x amps. 15 amps is for the output at 12 volts - 15 x 12 =180watts. On power side at 115/120v, the amperage will be significantly lower - 180watts/120volts = 1.5 amps. No grade credit given for this online math course.

what voltage dimmer would you recommend, so i can have 0 to 12 V 20A dc in the output please ? for 15m of led rolls.

LEDs are dimmed via PWM, not voltage. You would still use a 12v PWM dimmer

would one of these be acceptable for a peltier cooling power supply

As long as the voltage and amps match. I’d pare the acceptable cooler amps down to 70% to be safe.

Can this power supply run continuously? Does it need a cooling fan to do so?

I believe it will run continuously at the rated output. At or below the rated output, I've had no requirement for an external fan. The unit appears to be protected with overload protection based on rated output. One note, my unit is not mounted in a air-tight enclosure but utilized as a bench-top unit.

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12V 20A 240W Power Supply

Product ID: 58379437

Details

Brand
ALITOVE
Current Rating
20 A
Mounting Type
Wall Mount
Power Source
Dc 12v
Product Dimensions
4.33"D x x

⚡240W max power output

🔒Multi-layer safety cut-offs

🤫Silent fanless design

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Description

⚡ Power up your tech game with silent strength and bulletproof safety!

POWERHOUSE PERFORMANCE - Delivers a robust 12V DC at 20A, powering your LED strips, CCTV, and more with unwavering strength.
VERSATILE COMPATIBILITY - Ideal for LED lighting, 3D printers, security cameras, audio amps, and network hubs—your all-in-one power solution.
WHISPER QUIET OPERATION - Fanless metal casing with optimized heat dissipation ensures silent, cool, and reliable performance.
FLEXIBLE VOLTAGE CONTROL - Adjust output voltage by ±15% to perfectly match your device’s needs without compromise.
SAFETY FIRST ENGINEERING - Equipped with automatic overload, overvoltage, thermal, and short circuit protections to keep your devices secure.

The ALITOVE DC 12V 20A 240W Power Supply is a high-capacity, adjustable voltage adapter designed for professional-grade LED lighting, CCTV, and electronic devices. Featuring advanced multi-layer safety protections and a fanless metal case for silent, efficient heat dissipation, it ensures stable, reliable power delivery in a compact wall-mount form factor.

Specifications

ASIN	B078RTV41D
Brand Name	ALITOVE
Current Rating	20 A
Customer Reviews	4.6 4.6 out of 5 stars (634)
Included Components	12V 20A Power Supply
Item Dimensions D x W x H	4.33"D x 7.87"W x 1.96"H
Item Weight	0.6 kg
Manufacturer	ALITOVE
Maximum Frequency	60 hertz
Minimum Frequency	50 hertz
Model	AL12V20AT
Mounting Type	Wall Mount
Part Number	AL12V20AT
Power Source	Dc 12v
Specification Met	CCC, FCC
UPC	702455811674
Unit Count	1 Count

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$63.92

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In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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