
Tesla 100A CT 10ft Extension Cable
Tesla 100A CT 10ft Extension Cable
Tesla 100A CT 10ft Extension Cable
Tesla Neurio W2 metering — The W2 meter's current transformers — Powerwall 2 vintage, and not for Powerwall 3.
Before the Remote Energy Meter, Tesla metered solar generation through a Neurio W2 meter and its clamp-on current transformers. Plenty of those installations are still running, and the CTs and their extension leads are still needed when one is damaged or a board is moved.
About the Tesla Neurio W2 metering
The CT kit is a pair of 200 A clamps, Tesla part 1622277-00-A, for connection to a W2 meter. The extension is a 3.3 m lead for a W2 CT that cannot reach.
Neither part has any place on a Powerwall 3 system. Tesla ended Neurio compatibility with that generation, so a Powerwall 3 needs the Tesla Remote Energy Meter and genuine Tesla CTs.
What does this fit?
This is the current transformer hardware for a Neurio W2 meter on an older Powerwall installation.
These parts are for the Neurio W2 meter only. Powerwall 3 is not compatible with Neurio meter equipment — a Powerwall 3 uses the Tesla Remote Energy Meter and its own CTs instead.
The products it is ordered with:
What the job needs
The details that decide whether this suits the system:
- The CT kit is 2 × 200 A clamps, part 1622277-00-A, for a Neurio W2 meter.
- The extension lead is 3.3 m (11 ft) for a Neurio W2 CT.
- Only compatible with the W2 Neurio meter.
- Powerwall 3 is not compatible with Neurio meter equipment. Specify the Tesla Remote Energy Meter Kit on any Powerwall 3 job.
Where this earns its place
The Neurio W2 metering is specified most often for these jobs.
Tesla W2 CT extension, 3.3 m technical data
Questions we get asked about this inverter
Will these work with Powerwall 3?
No. Powerwall 3 is not compatible with Neurio meter equipment. It uses the Tesla Remote Energy Meter and genuine Tesla CTs.
What is in the CT kit?
Two 200 A clamp-on current transformers, Tesla part 1622277-00-A, for connection to a Neurio W2 meter.
How long is the extension?
3.3 m, or 11 ft.
Documents, advice and trade pricing
Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our storage range, our hybrid inverters and our batteries, or email sales@clearraysolar.com if you would like us to check a pairing before you order.
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.

