partly chasing cable runs ?

[RfriendsLEKTRIK]

Hi everyone,

New here, Im no electrician, but do a lot of AV wiring so hopefully not too much of a numpty!

Ive got a quick question really, I'm installing new kitchen circuit and getting reg'd spark to do a new 17th RCD'd CU,

but I'm doing the chasing and laying cable, so the question is.....If i chase out for hidden cables behind worktops is it ok to then have the rest of the cables surface mounted where they be behind cabinets anyway?? its to to save on the chasing? mess and conduit as I have millions of cable clips. If I can do i need any type of termination or is it ok just coming out of a hole in the plaster at the end of the buried conduit??

cheers guys

heres some pics,
green lines+cabinets/worktop
blue=cahase
yelow=surface

 

[dingledong]

Yes it's ok and second q I not sure I understand sorry

 

[telectrix]

in pic#1 the vertical blue line in the centre (chased cable) is not direct line (vertically or horizontally) with an accessory, and thus is not compliant with prescribed zone/s.

 

[RfriendsLEKTRIK]

in pic#1 the vertical blue line in the centre (chased cable) is not direct line (vertically or horizontally) with an accessory, and thus is not compliant with prescribed zone/s.

theres an extractor going up there, but yes your right im not quite sure yet quite where to chase it to exactly, i marked on roughly what i thought would be near the top of the splashback

thanks for finding me my post and the quick response!

to clarify, the second part of my question was just at the end of the chase i'm assuming i can just leave a hole in the plaster for the cable to come out from the conduit, no need for any special clip or capping, before it runs along the surface cliped down

 

[dingledong]

No there is no need

 

[RfriendsLEKTRIK]

right i'm nearly all done :stooge_curly:

just havent yet done the pesky extractor run, i know it can go downward then up behind the splashback but not sure where exactly or how to teminate? are they usually fixed wired j box? or a cable outlet type thing?

thanks

 

[telectrix]

your extractor feed should terminate in a FCU adjacent to the duct ( if vented). a single back box is all that's required.

 

[driverman]

I know it is allowed to come down in a corner (150mm safe zone) as shown in pic, but what do most electricians here think about it?. I'm old school and would never do that in my day. I'm thinking at a later date that no one would know that they were there, other trades etc. Typically an alarm installer who may pick that corner to fit a PIR for instance. Yes he may see the cables if he had access directly above, but might of fished his cables a long way, or possibly a wireless PIR being fitted by a customer. Anyone here had any issues with cables being hit at a later date?

 

[RfriendsLEKTRIK]

I was thinking, straight drop in line with appliance was ok, and that the switched FCU should be near the cooker switch for the the same reason that the cooker switch cannot be hidden behind counters or placed above behind the cooker......so if theres any fault with either cooker or hood, with liquids /electric/burning etc that they can be isolated easily without going near them. That would make sense to me, but i know not all regs make sense!

If the way to go with regs is FCU by the hood and ducting, can I just ask out of interest....what the hell use is it up there!

 

[telectrix]

It's there for the purpose of isolating the hood for maintenance, and to fuse down to the correct ocpd for the flex to the hood.

 

[Flanders]

I would put a switched spur at same level as the worktop sockets and then go straight up to a flex outlet in cupboard adj extractor or above cupboard if enough space to access, This way you keep the cable run in a proscribe zone and can easy turn extractor on and off

 

[telectrix]

extractors have magic thingies called switches for turning on and off, some are even coupled into the flap.

 

[Flanders]

extractors have magic thingies called switches for turning on and off, some are even coupled into the flap.

Yes I know but some extractors have fiddle high level switches and if you are a short person (thinks that's the PC term) you may find it hard to reach them so a low level switch makes it easier to turn it on ans off, also handy for people with OSD who have to turned everthing off before leaving the house

 

[telectrix]

OSD? is that obsessive silly disorder?

 

[Flanders]

OSD? is that obsessive silly disorder?

Yes that's what I meant But also apply's to people with OCD as well