commercial

  1. T

    Air con units and it equipment on RCD?

    Hi , I usually do domestic work but i have an office job to price and i was wondering if the following items should be RCD protected, the reason i ask is for nuisance tripping. Air con units 3ph and single Sockets for the office computers Comms/Patch panel Thanks
  2. M

    Types of fuses for apartment

    Hello, I bought an apartment and i want to add new dedicated circuits and also to change the fuses panel ( very very very old one). So i was thinking to buy for main fuse a 25 - 32 A RCCB (2P), for power sockets (4 circuits) 1 x 16 A RCBO for 4 x MCB ( 1P + N ), 1 x 10 A RCBO for 2 x MCB (10 A...
  3. D

    Economical DBs

    I normally only spec and fit Schneider Acti9 (aka Merlin Gerin) DBs and switchgear, but have a job coming up where the budget just isn't there for it. So what can anyone recommend as a good quality but more cost effective DB? It's a pretty simple job and only needs a single phase DB with...
  4. dokkan1080

    32amp radial

    In a school today helping an approved contractor. There is a over door fan heater on a 32amp radial fed off a rotary isolator. It then goes into a bank of 3 switches that are used to control it. The swtchs are double pole rated at 20 amps. Isn't that a danger being on a 32 amp 4mm mcb
  5. dokkan1080

    Lighting advice

    Hello, first post of many I hope Does any one have any good LED compliant panels 600x600 for use in offices and schools, they wish to share with me? TP(a) fire rated but its not a major one because of fire hoods and all that. L2A and L2B compliant, >ugr 19 and any other compliance I have...
  6. eleclio

    Would this be acceptible for emergency lighting test switches

    Hi Just made up this drawing of a way to wire and test emergency lighting and keep the non-emergency lighting lit. Has others wired it this way and would it be 18th edition compatible? I've attached the drawing
  7. stidge

    Commercial kitchen sockets

    Hi all, I undertake maintenance at 3 x pub kitchens ( that’s what I tell the wife anyway) . Every 6-8 months I get called back to change sockets as scorched, cracked, brittle . Obviously these are already fitted too close to fryers etc , and all in white plastic dado trunking . The design is...
  8. The apprentice

    LED DRIVER

    hi guys panel lighting which has a driver in them above a foam tiled office my question is that the twin and earth feeding the driver is not earthed my some people are saying well a pendant dosent have an earth what do you guys think
  9. J

    school caretaker worries

    I have a question on electrical work in schools. I'm a caretaker in a school with over 1500 kids in West Sussex and recently the school has employed a maintenance man that says he is a qualified electrician... I'm not sure he is as I know using insulation tape on live wires and poking them...
  10. T

    Advice for a possible job change?

    Hi all, Apologies if this is in the wrong place. I was wondering if anyone had any advice for me in regards to where to begin my search for a new job. I’m currently a commercial/industrial electrician and have been with my current place for just over a year. I moved there from a domestic...
  11. J

    BX in commercial buildings

    Hey so I am renting a large office space in NJ that used to be a school. The space is about 13k sq ft, with drop ceilings and there are fluorescent units throughout. I am slowly replacing all of the units with either pendant or led panels. What I’ve realized is that 98% of the wiring for these...
  12. P

    Siemens Stratum DB spares

    Can anyone please tell me where I can obtain spares for Siemens Stratum 400 DB’s or is there anything currently available that is genuinely compatible? I did manage to obtain some spares which were used but found some in a questionable condition. I saw in another thread someone said some Wylex...
  13. V

    Series parallel motor starter with auto off proximity sensor

    Hi All A while ago a customer asked us to move a 1970s single phase corn mill and return it to use. It had an old series parallel starter with a lever on it ..which we replaced with a crompton controls series 3000 starter...all good and running. Now they had another ip rated box attached to...
  14. T

    Commercial fridge Titan XTO-40-G power supply

    I'm having a hard time reaching this manufacturer for answers. Can someone help me try to use the following product? Titan open air refrigerator voltage 220 amps 8.5 hz 60 phase 1 plug type NEMA L14-20 I'm facing 2 issues, the plug type is not common, I believe it is a twist and lock type and...
  15. J

    Sump Controller

    Can't seem to figure out the issue on a sump controller I am working on. It is a pre-built controller box, set up for two pumps (lead/lag pump system) and a 4 float system (stop,lead,lag,alarm). Both pumps are 120v, as is the control circuit. The contactor is a 3 pole contactor but shipped out...
  16. J

    Specialist Electrical Services

    Wire & Fiber UK brings a wealth of experience of specialist services, giving our new and existing clients the peace of mind when it comes to protecting their people, property and assets. We can deliver an array of technical installations including: Fire & Security - integrated or...
  17. EddieSparks

    400 amp 3ph, Harvey Hubbell isolators, (seized up)

    Tomorrow night, 5/12/19; I have got a job at a southern water pumping station to investigate a seized isolator. The isolator is a 400amp 3 phase Harvey Hubbell from about 1960’s. it is stuck in the closed position. We are able to remove the Handle and take the door off to game access. Has anyone...
  18. dlt27

    Motor starter help.

    Hi all, thanks again for any input. I have been asked to look at this starter as motor starts ok, but when switches over to run motor stops and starter just hums. First of all like I’ve said in previous posts I haven’t had a lot of experience with motors/ starters etc Am I right in thinking this...
  19. R

    Is someone trying to rip a customer off? Advice on a Fire Risk Assessment

    Hi So a customer of mine has just had his fire extinguishers tested and for some reason the guy doing the fire extinguisher check removed this 600x600 flat LED panel and looked above it and said that what he sees is not safe and it's a fire risk. He proceeded to quote £600 to have 7 of these...
  20. J

    Looking for books that’s go into detail on heating systems

    Looking for books that go into detail on heating systems especially S Plan and also wiring on commercial plots such as communial flats etc thanks in advance !
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