Home Charger - Data Cable/CT Clamp?
Discussion
Apologies for this novice question from a technically ignorant individual.
Welcome advice please on whether I need a CT Clamp, which I understand means also having a data cable, for a new EV charger installation. My garage is built quite a way in front of the house and the power cable, which is fine for the charger, is buried under the garden. Garage has a decent WiFi signal. The data cable would have to be routed along fencing, under flower beds and between pathway slabs etc, due to burying it being cost prohibitive, and would soon be damaged.
An installer has said "Using a CT Clamp is recommended for safety and functionality, especially for smart features like load balancing, solar integration, and timed charging, which require the CT clamp to measure the total property load and prevent overloading the main fuse. Without the CT clamp, smart features may be disabled or the charger may operate at a reduced output. I can omit the CT Clamp but the charger is set to late night charge only. When I inform UK Power Networks they will know the total supply for your area and property and if the installation of the Charger takes their supply above they may request that I lower the energy consumption of charger. Which can be as low as 10amps 2.3kW on a Hypervolt. So a CT Clamp can be adventurous."
My neighbours property mirrors mine and he had a Hypervolt installed a few years ago, without a data cable, and says the installer is talking rubbish. I'm wondering if legislation has changed since his installation.
Who is correct please? A charger set for nights only would be fine, but not at a reduced output.
TIA
Welcome advice please on whether I need a CT Clamp, which I understand means also having a data cable, for a new EV charger installation. My garage is built quite a way in front of the house and the power cable, which is fine for the charger, is buried under the garden. Garage has a decent WiFi signal. The data cable would have to be routed along fencing, under flower beds and between pathway slabs etc, due to burying it being cost prohibitive, and would soon be damaged.
An installer has said "Using a CT Clamp is recommended for safety and functionality, especially for smart features like load balancing, solar integration, and timed charging, which require the CT clamp to measure the total property load and prevent overloading the main fuse. Without the CT clamp, smart features may be disabled or the charger may operate at a reduced output. I can omit the CT Clamp but the charger is set to late night charge only. When I inform UK Power Networks they will know the total supply for your area and property and if the installation of the Charger takes their supply above they may request that I lower the energy consumption of charger. Which can be as low as 10amps 2.3kW on a Hypervolt. So a CT Clamp can be adventurous."
My neighbours property mirrors mine and he had a Hypervolt installed a few years ago, without a data cable, and says the installer is talking rubbish. I'm wondering if legislation has changed since his installation.
Who is correct please? A charger set for nights only would be fine, but not at a reduced output.
TIA
Ideally, the installer should use EV cable with a cat5 network cable built into it, then there is just 1 cable run.
https://www.toolstation.com/cut-to-length-ev-ultra...
Otherwise you can get wifi clamps like the MyEnergi Harvi that will send the current usage to the charger
https://www.myenergi.com/product/harvi/
https://www.toolstation.com/cut-to-length-ev-ultra...
Otherwise you can get wifi clamps like the MyEnergi Harvi that will send the current usage to the charger
https://www.myenergi.com/product/harvi/
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