Here's the part nobody tells you: icicles and strands aren't two products. They're the same LEDs in two wire geometries, and the difference is all in the specs. If you only buy by the picture in the box, you're guessing. If you read the box, you already know which one will still be on the eaves when the first storm hits.

The spec that actually changes: LED count per linear foot

An icicle strand has roughly 4x more LEDs per running foot than a regular string, because the light points drop off the wire instead of sitting on it. You can see this on any spec sheet: icicle strings come in 70, 120, 288, 360, or 720 LEDs per run. A standard string usually tops out below 30. That's not a difference in brightness, it's a different display class.

In our production runs the rule we hold ourselves to is simple: the number on the box is your brightness ceiling. If your eaves are over 6 metres of visible wire, the 360-LED tier is the practical minimum for an even look. A 70-LED string will read as sparse the second it's hung, because the gaps between the points are visible from ground level. Below that tier, you're paying for thin.

Power math, done in thirty seconds

A 70-LED icicle string pulls roughly 2.8 W at 120 V, under 25 mA. Chain six strings together and you're at 17 W, a rounding error for a 15 A circuit. So no, power is not the constraint for a house-sized display. The real constraint shows up somewhere else, and it's what leaves half of dimming complaints unsolved.

If your display runs dim in the second or third string, that's voltage drop along the wire, not a power draw problem. The fix is wire gauge and run length, not fewer LEDs. We've watched this fail when people buy a 20 m string to save money and the far end is 30% dimmer than the near end. For anything longer than 15 m of visible run, check the wire gauge on the series cord before you buy, not after.

Budget note: a 2.8 W string running 8 hours a night over a 50-night season uses roughly 1.1 kWh. Put your money into the two specs that actually fail.

Where the two types actually fail, and what to check before you buy

Here's what we see in field returns, in order of frequency. First, the connector seal. Icicle strings terminate with a plug that plugs into the previous string or the driver. That connector housing is where the IP rating is weakest. Rain gets in, sits against the contacts, and corrodes the connection over one season. When a string dies "mysteriously," check the connector before you blame the LEDs. In the majority of cases we've pulled, the LEDs are fine and the contacts are the problem.

Second, the clips. Icicle clips are designed to bite into the gutter or fascia, and they do it well. They also fatigue, especially in cold, wet climates where the plastic gets brittle and the gutter profile changes. A clip that's held a string for two seasons is one cold snap away from letting go. If your clips look thin or flimsy, that's your first failure in the first storm. We've watched this fail when a whole row of icicles drops off a commercial property in a single night, all on clips from the same batch.

Third, and the one that actually separates the two types: the wire. Icicle wire is thicker, because it carries more current per foot. If the wire on a string you're buying feels like a shoelace, that's a string, not an icicle, regardless of what the box says. Feel the wire before you buy. It tells you more than any spec sheet.

So here's the buy list. Read the LED count and make sure it's at least 360 for eaves over 6 m. Check the connector seal: it should be closed, not a gap you can poke a fingernail into. And the clips should be substantial, not thin. If all three check out, the string will outlast two seasons. If any one doesn't, you already know which one will fail first.

Take a look at what we run in our own displays. Our Christmas Lights range lists LED count, connector rating, and clip design on every product page, so you can check all three specs before you commit. And if you want the lights to last a third season, a timer is the cheapest upgrade you'll make this year. Our LED candles run on the same logic: fewer hours in the socket, longer life in the field.