evec Pedestal Charger DLB Installation Guide (Single & Three-Phase)

If you're fitting multiple EV chargers on one supply, Dynamic Load Balancing (DLB) keeps the site safe, prevents overloads, and helps customers avoid costly supply upgrades.

This guide walks you through everything you need to know to fit the evec DLB kit—from the tools you’ll need and where to run your data cable, to wiring in your CT clamps and commissioning the system in the app.

We cover both single-phase and three-phase installations, with practical advice at every step to help make your life easier on-site.

 

Want to understand how DLB works and why it’s a smart move for your clients? Check out our blog on Dynamic Load Balancing here.

 

What’s in the box?

When you open your evec DLB kit, you’ll find:

• 1x Installation manual
• 1x or 3x CT clamps (depending on whether you're doing a single or three-phase setup)
• 2x 120-ohm resistors

 

What tools and cabling do you need?

We recommend EV Ultra cable for new installations – it’s tidy because it combines power and data in one sheath. But if you’re adding DLB to an existing setup or running power and data separately, go for a shielded CAT5e/CAT6 cable with twisted pairs. That’s what we’ll be using in this example.

You’ll also want:

• Basic hand tools
• Wire strippers
• Screwdrivers
• Cable ties/fixings
• Crimp connectors (depending on final kit spec)

 

Step 1: Plan your cable run

Start by removing the rear panels on all pedestal units. You’ll be working inside each one, so give yourself easy access.

You’ll need to run a single length of data cable between all the chargers—from the first to the last. If you’re installing new chargers, we recommend EV Ultra cabling, which carries both power and data.

However, if you're adding DLB to an existing install or want to run power and data separately, a good quality network cable with multiple twisted pairs will work. Make sure you’ve got enough to connect every pedestal along the chain, allowing some slack for routing through bases and under groundworks.

 

Step 2: Installing the CT Clamps

On the first pedestal, open it up and locate DIN Rail 1 (the top one). You’ll see a connection block for the CT clamps.

• Single-phase setup: You’ll only have one CT input (CT1).
• Three-phase setup: You’ll have CT1, CT2, and CT3 terminals—one for each clamp.

To install:

1. Press down the small orange button with a screwdriver.
2. Connect the black wire on the left, red on the right for CT1.
3. Clip the CT clamp around the live wire between the meter and the consumer unit. (Make sure the arrow on the clamp faces in the direction of current flow (usually towards the consumer unit).

Repeat for CT2 and CT3 if it’s a three-phase installation.

 

Step 3: Wiring the data connection

Now you’ll wire in the data connection to link the pedestals together.

First pedestal:

1. Strip back about 6 inches of your network cable.
2. Choose one twisted pair—this will be Pair 1.
3. Connect one of the 120-ohm resistors to the end of the pair.
4. Wire these two cables into the last two terminals on DIN Rail 1 (next to CT1 or CT3, depending on your setup).
   Tip: Polarity doesn’t matter, but stick to the same order throughout.

Then:

1. Choose a second twisted pair—Pair 2.
2. Connect the wires to the only two terminals on DIN Rail 2 (the one below).
   No resistor needed here.

 

Step 4: Linking the rest of the chargers

Once the first pedestal’s done, route the data cable out of the base and into the second pedestal.

Repeat the process:

• Strip the cable (6 inches)
• Take a new length of cable to reach from pedestal 2 to pedestal 3
• Twist together the matching wires (Pair 1 and Pair 2) from both cables
• Connect the twisted pairs into the same terminals on DIN Rail 1 and DIN Rail 2 as before

Repeat this process for every charger in the chain.

 

Step 5: Finishing with the last charger

On the final pedestal in the chain, you’ll:

• Add the second 120-ohm resistor to Pair 1 before connecting it to DIN Rail 1.
• Connect Pair 2 directly to DIN Rail 2 (no resistor needed here either).

And that’s it—your wiring is complete!

 

Final checks

Before you pack up:

• Make sure the CT clamps are fitted securely and facing the correct direction.
• Double-check resistor placement (first and last only).
• Confirm consistent wire orientation across all pedestals.
• Secure cables and close all panels.

 

Commissioning

Commissioning is handled in the DLB section of the evec app. For full setup steps, refer to the pedestal charger’s instruction manual, which includes everything you need to configure and test the DLB system after wiring.

 

Need a hand?

We know every install can be slightly different. If need any support, get in touch with our expert customer service team: customer.services@evec.co.uk

 

Ready to install Dynamic Load Balancing?

By fitting evec’s DLB kit, you’re helping your customers future-proof their EV infrastructure and avoid costly overloads. It’s a simple, effective way to get more out of every installation — without upsizing their electrical supply.

Explore evec pedestal chargers: https://evec.co.uk/pedestal-charger/
Order your dynamic load balancing kit here: https://evec.co.uk/dynamic-load-balancing-kit-single-phase-model-for-vec01-and-vec03-evec-ev-chargers/