Hi Good morning- Hope you all are safe and well. I need to get some power in loft so wondering if someone can help please. I currently have a 18W flouroscent light in loft which is connected to a 10m long plug socket. Everytime i want to use the loft, i get the cable down and plug into a socket on first floor. I want to add a positive input ventilation fan in loft. This has 18w fan and 400W heater and manufacturer recommends connecting with 3A FSU. Can I tap into the upstairs lighting circuit to get power for these two? I was thinking to take a spur to a 3A FSU and then onto a 3A fused sockets with "not to exceed 3A labels". One socket for ventilation fan and one for light. This way i dont need to install a separate switch for the loft light? Fan manufacturer manual allows installation via 3A plug and socket and doesn't require "hard wiring". I am open to other suggestions if i am doing something wrong. Getting socket ring extended in loft will involve too much work so i thought of this. Thanks for your time in reading my post. Edit: All upstairs lighting is LED lighting which should have reduced the load on lighting circuit if it matters.