air conditioning units

[sparky1ste]

hi everyone .just a quick one.
going to put new feed in for 2 split air conditioning units and wandering if there is any special regs or something to comply with.
cable-2.5
length 25 metres
fuse rating-20/25a breakers c/d type?
32a 4 pole isolater switches-ip65
no cable going outside-straight through the wall and into back of switch
it is a little commecial shop

 

[tony.towa]

No real problem with air con units. 90% will work happily with C type breakers but I generally fit D type (saves any potential problems). I assume that the isolator is for external mounting in which case it is required accesible and in close proximity to the external heat exchanger. Check what is required, with regard to individual fusing, for the internal extractor unit and the supply requirement.

 

[sparky1ste]

thanks i wasnt 100% sure if cor d type as i mainly do domestic