Wiring Conventions: Is the black wire positive or negative

Give your staircase installation a professional finished appearance. Any 10 mm (3/8 inch) wide (or narrower) LED strip fits inside this aluminum

Stair Nose Aluminum Channel for LED Strip - (2.0m/6.5ft)

How to Identify Positive & Negative Wires: AC, DC, & More

wiring - In a light switch, how can I tell if the black wire is really hot and the white wire is really neutral? - Home Improvement Stack Exchange

Slim Downlights - Lumicrest LED Lighting

A step above the standard with no unsightly screws, this modern, low-profile wall plate instantly elevates the look of Radiant dimmers, switches,

Legrand Radiant Three-Gang Screwless Wall Plate

Electrical Wire Color Codes: Everything You Need to Know

12V Hardwire Power Supplies - Lumicrest LED Lighting

LED Desk Light - Lumicrest LED Lighting

5V DC High CRI LED Strip Light 120 LEDs /m (tape light) 5 meter/16.4ft reel, Applications include:, - USB battery powered lighting

5V Single-Cuttable LEDs: White High CRI (90+) LED Strip Light, 5 watts/m, 5 meters/16.4ft

What's the difference between a positive and neutral wire?

Electrical Wiring Colours Standards