This is an independent educational blog, not a licensed electrical contractor. For any actual electrical work, hire a licensed electrician.
Lighting & Fixtures

Lighting & Fixtures

Bulbs, dimmers, and fixture basics — informational only.

CKT 58 Lighting · Beginner

Track Lighting: Why the Heads and the Rail Have to Match

I ordered three replacement heads that looked exactly right and none of them worked. The letter on the listing is shorthand; the label inside the channel names a manufacturer and a series.

7 min
CKT 53 Lighting · Beginner

Low-Voltage Landscape Lighting: What the 12 Volts Covers

The garden half is genuinely low risk. The 120-volt half at the wall is not, and that is where most of the trouble lives.

7 min
CKT 48 Lighting · Beginner

What Holds Your Light Fixture Up: Ceiling Boxes and Weight Limits

Fifty pounds for a light, a separate listing for a fan. The small object above the canopy decides what you're allowed to hang.

7 min
CKT 44 Lighting · Beginner

Damp, Wet, or Dry: The Rating That Decides Where a Fixture Can Go

Fixtures are listed dry, damp, or wet — and the middle category is where the mistakes happen. Why a covered porch isn't automatically a damp location.

7 min
CKT 38 Lighting · Beginner

Recessed Lighting and the IC vs. Non-IC Rating

IC-rated or not? Why the label stamped inside a recessed can decides whether attic insulation can safely touch it — and when to call a pro.

6 min
CKT 33 Lighting · Beginner

Light Color Temperature: What the Kelvin Number on a Bulb Means

The confusing Kelvin number, decoded — why 2700K feels cozy, 5000K feels clinical, and how the scale runs backward from what the word 'warm' suggests.

6 min
CKT 13 Lighting · Beginner

LED vs. Incandescent vs. CFL: What Actually Changed

Why watts stopped being a useful comparison, and how to shop by lumens across bulb types.

6 min
CKT 14 Lighting · Reference

Understanding Dimmer Switch Compatibility

Why LED bulbs can flicker or buzz on older dimmers, and what "dimmable" and "LED-compatible" labeling means.

6 min
CKT 15 Lighting · Beginner

Why Do My Lights Flicker? Common Causes Explained

From a loose bulb to a loose wiring connection, ranked from most to least benign — and when to call a pro.

6 min
CKT 16 Lighting · Beginner

Smart Switches and Smart Bulbs: What's the Difference?

Two ways to add smart lighting, the tradeoffs of each, and how to pick the one that fits your home.

6 min
CKT 27 Lighting · Reference

Light Bulb Codes Explained: A19, E26, BR30 and Friends

Every bulb code answers two questions — glass shape and base size — and both follow one simple rule. Decode A19, E26, BR30 and the rest so a bulb swap always buys the right bulb.

6 min
CKT 28 Lighting · Beginner

Why the Wattage Rating Inside a Fixture Matters

The MAX 60W sticker is a heat budget, not a brightness limit. What overlamping quietly does to sockets and wiring — and why LED actual watts make the math work in your favor.

6 min