I thought this was an interesting question which was sent to me via email:

Good day
Are you able to advise if an additional ECOC is required if a new stove and earth leakage unit is installed at my home. A request for some validation/guarantee of safe installation has resulted in me receiving a letter, on company letter head, stating that the work complies with regulations. That's it, no mention of which regulations or anything.

Thank you

What would your answer be to this question?