mechanical

  1. The Solar King

    Flow Charting and Work Planning

    As it is Friday, the attached may be of interest. This dates from my time at what was then British Leyland in the late '70s. Having been taught this kind of process mapping in Operational Services, it appeared on my desk during a particularly difficult project aimed at work simplification and...
  2. T

    "Multi-skilled" maintenence departments, whats your take?

    Hi again guys, been a while since i last posted on here since ive had alot on :grin:. just a quickie really, what is everyone's take on this 'multiskilling' malarky that seems to have wormed its way into our maintenence departments? i mean i get it, train 1 guy to be able to cover both a...
    • theroadblock
    • Thread
    • don't electrical learn led maintenance mechanical whats
    • Replies: 23
    • Forum: UK Electrical Forum
  3. W

    Time delayed RCD to protect tails entering a metalclad CU

    Hi Guys, A Metalcad CU is being installed on a TT system in a farm garage. Chances arew things will be rested up against the walls so a Metalclad CU has been chosen to give it protection. All circuits will be protected by 30mA RCD / RCBO. From research it seems a 100mA time delayed RCD will be...
    • wadhamfarm
    • Thread
    • delayed enclosure mechanical protect protection rcd tails time
    • Replies: 2
    • Forum: UK Electrical Forum
  4. P

    Mechanical Protection of Main Earth

    Hi Guys I have to install an 80 Amp supply to a new CU in a Church extension 22 metres from the main Dis Board. The route follows the back of the church generally hidden under pews all surface mounted. I do have to feed it through an 800mm stone wall. I could use a 3 core 16sqmm SWA XLPE...
    • Piratepete
    • Thread
    • earth main mechanical protection
    • Replies: 9
    • Forum: UK Electrical Forum
  5. E

    Mechanical and Electrical

    Hi Everyone, I want to get in to Mechanical and Electrical and am finding it pretty hard in finding a job with a company who wants to train up a normal domestic and commercial experienced Electrician with 2391. I was looking at doing a HNC/HND in electrical engineering to make a firm take...
  6. E

    Cables and trunking

    I was always led to believe throughout my time as a spark that when installing T+E cables in airing cupboards and cupboards under the stairs etc that are generally fairly inaccessible, you have to put the cables in PVC trunking (or similar) for extra mechanical protection, you can't just clip...
    • ed-ectrician
    • Thread
    • cables direct mechanical protection things trunking
    • Replies: 12
    • Forum: UK Electrical Forum
  7. D Skelton

    Mechanical protection

    Just out of interest, how many steel capping lengths stacked on top of each other would you consider to be suitable to provide mechanical protection to switch drops on non-RCD protected lighting circuits? I've always been lead to believe that 3mm of steel is thick enough to be defined as...
  8. B

    Anything suitable for use as mechanical protection for swa run on the ground?

    I was at a customer's last week and he asked me to repair some SWA that had been attacked with a spade. The trouble being that is loads of the stuff running round his garden, just sitting on the ground. Some can be either buried properly or lifted onto a fence or wall but there is one section...
    • brman
    • Thread
    • anything ground mechanical protection suitable swa
    • Replies: 12
    • Forum: UK Electrical Forum
  9. C

    Isolation switch for boiler supply?

    Been asked to look at a house on a small development completed about 5 years ago. Really messy situation involving builders and houses having no completion certificates or even planning permission in one case. Gas central heating is installed but the boiler is wired up straight to a 6 amp...
    • cadspark
    • Thread
    • boiler isolation mechanical supply switch verdana
    • Replies: 45
    • Forum: UK Electrical Forum
  10. J

    Protective earth bonding run externally, no mechanical protection

    A few years back I carried out a pre work survey and discovered a contractor had installed the main protective earth bonds clipped direct externally. When I questionned him, he assured me he was using a UV tolerant and weather-friendly cable that therefore complied. It was a brown cable which...
  11. 1Justin

    Hiding meter tails in walls, sufficient mechanical protection

    522.6.101(iii) requires trunking 50x50 to BS EN 50085-2-1 . But mechanical protection (iv) : We agree that mechanical protection is "difficult to provide" and we are advised here of 3 or even 5mm steel. The lid of the BS EN 50085-2-1 trunking is not this thick, yet that trunking could be...
    • 1Justin
    • Thread
    • aus mechanical meter meter tails protection tails walls
    • Replies: 19
    • Forum: Australia
  12. 1Justin

    switching off for mechanical maintenance? - PIR lighting/extractor

    Extractor fan on a domestic bathroom lighting. (There is no secondary switch in bathroom ceiling. Lighting and extractor fan both on PIR sensor right now). 537.3.2 "Where practicable, a device for switching off for mechanical maintenance shall be inserted in the main supply circuit". It's not...
    • 1Justin
    • Thread
    • aus lighting maintenance mechanical off pir switch switching
    • Replies: 2
    • Forum: Australia
  13. S

    Mechanical Protection vs RCD Requirements

    Hi, being asked to look at an existing commercial setup where 3 large rooms are rented out to different commercial tenants (picture rooms 1, 2 and 3 adjacent and in order left to right). The point of supply is inside room 1 and is single phase with a main board. Room 1 is occupied by a tenant...
  14. E

    Flexible conduit with mechanical protection

    Hi all, I have a job coming up, installing some pillar lights on a driveway that is being re-laid. My first thought was swa and wiska boxes as have done with a few garden projects), however... The lights will obviously be fitted flush to the floor so no place for my boxes and the internal...
    • elementps
    • Thread
    • aus cable conduit flexible mechanical metal protection stuff
    • Replies: 6
    • Forum: Australia
  15. D

    Does a CPC require mechanical Protection

    We have been asked to carry out some linking up eart bars on 5 blocks of flats, they want the CPC running in metal conduit, where I think that a CPC can be clipped direct, anyone know the answer and possible reg number.
  16. S

    BRE 495 Mechanical installation of roof-mounted photovoltaic systems - wanted

    Has anyone got a spare copy of BRE 495 Mechanical installation of roof-mounted photovoltaic systems please?
  17. L

    Addng cpc to two core lighting circuit

    Fellas is it permissible to run a single 2.5mm in a loft or do really need double insulated?, there has been an attempt to add an earth to the circuit before but they missed the switches out and some fittings are 32Ohm R1+R2, it's in a bungalow so should be easy
    • LlandrilloSpark
    • Thread
    • circuit core cpc easier fittings lighting lighting circuit mechanical switches
    • Replies: 5
    • Forum: Talk Electrician Forum
  18. B

    Mechanical Protection

    What do regulations state about cables such as T&E and Flex on cable tray etc?
  19. R

    What kind of engineer does this seem like?

    I would prefer to build mechanical systems as I can be more hands-on, maybe use power tools, etc. Despite this, I am more interested in what electrical products such as computers, radios do, MP3s; I do have an interest in planes, rockets, and vehicles as well, albeit not as much. I would...
    • rogelioezell
    • Thread
    • courses degrees electrical engineer engineering engineers mechanical product salary students
    • Replies: 3
    • Forum: Electrical Engineering Chat
  20. M

    Mechanical Science 2

    thanks for all your help on my last post the pennies are starting to drop and things are getting clearer but i still fall by the way side with calculations and onceagain i'm having trouble with this one any help would be much appreciated thanks A crane raises a 2.5 tonne load vertically in...
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