Both are safety extra-low voltage. The difference is how far the current can travel. At low voltage the current is high, so cable losses matter: on a long 12 V run the last lights glow noticeably dimmer than the first. 24 V carries the same power with half the current, so runs can be longer or cables thinner. Never mix the two on one supply: 12 V and 24 V lamps each need their own transformer or driver.

Why are the lights at the end of my run dimmer?

Voltage drop. The longer and thinner the cable, the more voltage is lost. Shorten the run, use a heavier cable, feed the circuit from the middle or add a second transformer.

Can I install low-voltage garden lighting myself?

The low-voltage cable and lights, yes. Anything connected to 230 V, including a fixed driver or a new outdoor socket, is a job for a qualified electrician.

Do 24 V lights work with a 12 V transformer?

No. Always use a power supply matching the voltage marked on the lights, and check whether they need a constant-voltage driver. For more ideas, browse the whole low voltage garden lighting section.

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Low-Voltage Garden Lamps | Page 3

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