Wiring 3 extractor fans to a single 1.5mm cable

Need advice on the following if possible :

I am planning on fitting 3 ceiling extractor fans (around 30w each)
in my new kitchen extension.

My electrician (since disapeared) installed the following into the
kitchen mains ring (which is on a separate fuse, etc) :

MK 1060WHI 13amp switched fused spur connection unit.

He changed the fuse from 13 amps to 3 amps and ran a 1.5mm
cable to the first fan (about 2 metres away from switch).

From there he ran a 1.5mm cable to the next fan (around 3
metres distance) and then to the last (around 4 metres distance).

The 1.5mm wires are plastered into the wall using a metal
channel. From there they run in the ceiling cavity (not insulated
as it is a warm deck roof).

Can anyone comment on the above and advice if I am overloading
the switch/1.5mm cable.

Is a 3amp fuse ok or should I upgrade to 5amps.

Thanks in advance for any reply to the above.

3 fans at 30 watts = 0.4amps so a 3 amp fuse is OK and 1.5mm will take much more than 3amps on a good day.

Your main concern is: how are you going to complete the papework necessary to comply with building regulations if you no longer have a registered electrician who can complete, certify and notify the works?

Thanks for the prompt reply - that is good news as I have been
worried about overheating, etc. Just to be clear, the 1.5mm wire
terminates at the last fan and doesn't loop back or anything - is
this still ok.

I had another electrician review all the wiring before plasterboards,
render, etc was applied and he is happy to come back, test and
sign off if 2nd fix stuff is good.

Just forgot to ask about the 3 fans in a row setup at the time.

Had to make quite a few alterations to reach his standards.

He got me to run separate wires from the fuse box to the lighting
circuits in the different rooms because of the number of downlights.

Also forced to change around 30 of the old style junction boxes
(for the downlights) with Ashley 17th Edition Downlighter Junction
Boxes and a few others with non-maintenace boxes.

Has not been a easy ride but can see the light at the end of the
tunnel (& hopefully some light from the downlights eventually)

Cheers.

Cool.

I can see now why the first electrician has "disappeared".

The new one sounds like a good un.