@debbieE17 Hi Debbie!
Usually if the charge is cutting out on a 3 pin cable it is due to the electrics/wiring in the house. The equipment with the vehicle contains a lot of safety features and if it detects an issue with the earth connection or there isn’t a stable connection it won’t charge as it needs to be 100% sure nothing is going to harm anyone touching the cable.
We do strongly recommend plugging directly into the 3pin socket and not using an extension where possible as extensions aren’t always stable and we have seen a couple of instances in the past where using an extension has resulted in charging cables melting or the car refusing to charge.
As @Tyson Mentioned, a 3kwh 3 pin socket will take about 23 hours to fully charge a Zoe, Where as a 7kWh home charger will do it in around 8 which is a huge difference.
I hope this helps! if you have any other concerns or questions please let me know
-Dan