Loft wiring advice please

[Andyx]

I am fitting a Nuaire Drymaster PIV into my loft space. I had it fitted in another house and it as it is max 15.3W and protected by a 1 Amp fuse was wired into the lighting circuit. I don't feel confident to do this through a junction box etc but there is loft light which I could use the wiring from easily - I just wanted to check is there a way I can do this without loosing the use of the light. As the the Drymaster has to stay on I assume I couldn't have both (without wiring direct from a junction box)?
cheers

 

[I2C]

He’s gone to Screwfix to ask there.

I'ts funny you should say that....

I used to work at a plumbers-merchant for many years. baring in-mind I had no plumbing qualifications at all, the qualified-plumbers used to ask me all sorts of questions from heat-loss calculations to BTU, etc. I always responded politely by saying "I'm not qualified and you should consult a qualified contractor for advice, here's someone that can help...".

Moral of the story, if you want recommendations, keep the merchant on your side!