Length of current transformer leads

[Greebo]

Hi Robert, welcome to the forums.

There’s a few topics here where this has been discussed, try searching for “CT cable length”, or “extend CT”.

“CT” stands for Current Transformer, which is the correct name for the “clamp” you’re asking about

Here’s a few results from a brief search I just did using those suggested terms:

Extending Cables from a CT to EmonPi

I have just extended the CT cables from the meter box on the outside wall of my house to the consumer unit where the EmonPi is located. I have followed the advice on which cables to buy and where to connect the braid to earth etc found at Learn | OpenEnergyMonitor. I have used mono jack plugs rather than the stereo suggested but I’ve read elsewhere that mono is OK too. I have found though that the readings are about -300W when the CT should be reading zero as the CT is not clipped around t…

Connecting current transformer to adc over cat5/cat6 and using RJ45 socket

I assume that this is the right platform to ask regarding very basic and practical physical connection of current transformer to ADC. I have a TPN 3x8way DB and plan to use 2xmcp3208 and esp8266 to monitor few load currents and all 3 phase voltages. But all project items won’t fit inside DB and also esp8266 will suppress Wi-Fi signal inside metallic DB. So I plan for providing only current transformers and voltage transformers inside DB and using 2meter CAT5e/CAT6 cables to extend connection to…

If after searching you end up with specific questions, certainly feel free to elaborate in this topic with more details.