RCD required?

[bilbo]

Air conditioning unit going in on a shop. New supply needed. To be run in NYJJ (Hi Tuff) straight to isolator. Runs through a hole in the roof and laid on cable tray. Is an RCD really necessary?!

 

[Evans Electric]

Not in my opinion  Bilbo .

 

[bilbo]

Glad to hear it! Had another electrician who came in more expensive than me slating me, telling the customer that I should be reported to the NICEIC because he believes any new circuit, regardless of design, should have RCD protection so if I wasn't Polish I must be a cowboy  :|

Glad at least someone agrees with me!

 

[Evans Electric]

Others may not , I'm old school and often wrong but its  fixed equipment , don't see a problem.

A lot of sparks seem to  become a bit OTT  .   A regular sparks at my wholesaler was on about an RCD for a job in a toilet  ...I asked if it was for a hand drier or oversink heater .......   thinking of an RCD spur unit .... .no its just the light  , T/E  switch & batten holder .   Why an RCD ?    Well lts all that water  is'nt it ?    :C

 

[Essex1]

From what you say no RCD required. 

 

[Risteard]

Had another electrician ... telling the customer that I should be reported to the NICEIC because he believes any new circuit, regardless of design, should have RCD protection

Then he should be reported to the NIC for not having a clue what he's talking about.

 

[Andy™]

RCD may be required but from your description i doubt it is. maybe he's a 5ww who has been told all circuits in a house must be RCD'd and he thinks it applies everywhere

 

[Rob_the_rich]

Can't see an RCD needed either, unless manufacturer's instructions specify one.