Thank you for getting in touch with WISKA! We would recommend you consult a professional electrician on this matter, given the nature of the problem you are experiencing. If you would like to know more about our products please e-mail us at info@wiska.co.uk. Many thanks.

Dear Andrew, in order to meet all standards, our junction boxes must not be too easy to open. A screwdriver must not be used to avoid damaging the seals. But if you press the cover on the side of the 3 cable entries a little bit in the middle, it can be released diagonally upwards. This requires some effort, but it works :) We hope we could help you with this! Many greetings from WISKA!

Thanks for your comment. In the USA you might need an UL approval which we don’t have at the moment. Best regards.