If you search for “mean well power supply wiring diagram,” you'll probably get a spec sheet or a quick answer. That helps if you already know what you're doing. But when you're in the middle of a lighting install and the customer's event is in 48 hours, you need the useful version. This is that FAQ.

I've worked with Mean Well units for years, mainly on LED lighting jobs and small industrial controls. In March 2024, I had to swap out a failed LED driver for a copper chandelier the night before a gallery opening. That's when you really appreciate a reliable supply line and a clear wiring diagram.

What are the basic steps for Mean Well power supply wiring?

Mean Well power supplies use a simple terminal block. The labels are on the case. For the LRS-150-24, for example, the input side has L, N, and ground. The output side has V+ and V-.

  • Connect AC live to L, neutral to N, and the earth ground wire to the ground screw.
  • Connect your load to V+ and V-.
  • Double-check the input voltage selector (if the model has one) before turning it on.

A lot of “wiring diagram” questions are really about which screw is which. As of 2025, most Mean Well supplies have the diagram printed on the side. Follow that one instead of a random blog.

Can I use a regular Mean Well power supply instead of an LED driver?

Sometimes, yes, if it's a constant-voltage LED strip or a series of 12V bulbs. But for most LED lighting, you want a constant-current driver. That's where the LPC series comes in. The LPC-60-700 pushes a constant 700mA through the LED string, which prevents overheating and uneven brightness.

Regular power supplies (like the LRS series) are constant-voltage. They're great for LED strips with a current-limiting resistor or a DC-to-DC LED driver. But pairing a random 24V supply with a bare LED board is a mistake.

How do you wire Mean Well 3-in-1 dimming (resistor/PWM/0-10V)?

If you see DIM+ and DIM- terminals, you have the 3-in-1 dimming option. It's one of my favorites because it's flexible.

  • Resistor dimming: connect a resistor between DIM+ and DIM-. Lower resistance usually means higher output. The exact range is in the datasheet.
  • PWM dimming: apply a PWM signal to DIM+ and DIM-. The frequency and voltage levels matter, so check the datasheet.
  • 0-10V dimming: apply a 0-10V DC signal. This is the most common for building controls.

Remember: those are isolated control terminals, not an on/off switch. If you wire them wrong, the light might stay at full brightness. Cost me a confusing afternoon in 2022 because I reversed the polarity.

Will a Zigbee dimmer work with a Mean Well LED driver?

That depends on what your Zigbee dimmer outputs. Many Zigbee modules have a relay or a triac output for dimming AC. But many Mean Well LED drivers with dimming inputs use 0-10V or PWM, not leading-edge or trailing-edge dimming.

So the practical answer is: get a Zigbee module with a 0-10V output, or use a Zigbee-to-0-10V converter. I put one into a project last year and it worked cleanly. If you already have a wireless Zigbee dimmer, check the module specs before buying the driver.

How do I install a copper chandelier without existing wiring?

This one comes up a lot in older buildings, especially with a copper or brass chandelier. No ceiling box means no safe place to hide the connections. The best fix is to add a junction box.

If that's not possible, here are the realistic options:

  1. Surface conduit: run a metal conduit from an existing outlet or ceiling box to the new fixture location. This looks fine in industrial or retro spaces.
  2. Cord-and-plug kit: finish the chandelier with a plug and hang it from a hook. Not ideal for permanent use, but allowed in some cases and easy for a tenant.
  3. Battery-powered fixture: better for closets or temporary displays, not a real chandelier replacement.

If you're converting a non-wired ceiling, don't just connect wires in the attic. That violates building codes and creates a fire risk. Bring in an electrician.

What should I look for when picking a Mean Well driver for a chandelier?

A chandelier with LED bulbs probably just needs a 12V or 24V constant-voltage supply. Look at the bulbs' input voltage. A chandelier with LED boards or COB modules needs a constant-current driver with the correct forward current and voltage range.

I made the rookie mistake in my first year: bought a 24V supply for a 700mA LED board. The board got hot and flickered. The LPC-60-700 fixed it. But the more interesting part was the copper chandelier's finish—cheap off-brand adapters often fail, and the owner wasn't happy. A branded Mean Well driver was worth the extra cost.

Can I buy Mean Well drivers in small quantities?

Yes, and I'll get on my small-order soapbox for a minute. You don't need to buy 100 units to get decent service. Authorized distributors stock Mean Well, and they will sell you one unit.

In March 2024, I needed one HLG-40H-24B for a small retail display. The distributor's engineer even answered a question about the dimming curve. That's the experience you want—especially when your timeline is 36 hours.

Still stuck? Pull up the specific model's datasheet and check the wiring diagram. And don't skip the step of turning off power at the breaker first.

Disclaimer: Wiring can be dangerous. Always disconnect power and follow local electrical codes. Verify your specific Mean Well model's datasheet before installation.