load

  1. A

    Connecting load to a live FSU - Legal?

    I work with fire alarm panels and have recently come across a situation where my customer could not isolate the FSU recently installed for me as the FSU was fed from a breaker than would have caused major disruption if knocked off. Now when I did my City&guilds 2330 & BS7671 they taught me no...
  2. E

    EICR code - potential load on lighting circuit more than MCB rating

    I'm writing up an EICR. On one of the lighting circuits the potential load is theoretically about 1300W on a 5A BS3871 breaker. In reality, the arrangement has been in place for at least 8 years there are no signs of thermal damage, it is difficult to find lamps these days that would max out all...
  3. K

    Earth leakage current issue (no load connected)

    I've come across a problem today that has completely stumped me. I used my clamp meter on the main protective conductor and found there was over 4A flowing. Checking the line and neutral conductors, they each had exactly 2A. Obviously these numbers do not add up as if there was leakage to earth...
  4. P

    Monitors providing insufficient load for insulation test

    We have hit a snag with PAT testing of some computer monitors in our school (class I). We have a basic battery powered Seamark PrimeTest 50 PAT tester. Earth test passes fine, but then the insulation test gets stuck on "Check Connections", which means the monitor is not providing sufficient...
  5. D

    Not an electrician, need advice re: load on mains power

    Hi all, I have no knowledge in your field and would really appreciate some advice. I am setting up a temporary sound-installation in the corner of a park. There is a school approximately 100m from the installation site. The installation requires 8 powered speakers and a laptop. I am hoping to...
    • diller
    • Thread
    • advice electric electrical electrician load mains power
    • Replies: 10
    • Forum: DIY Electrical Advice
  6. K

    Is 20A double pole switch sufficient for total load rating of two ovens?

    Hi there, I'm installing two ovens, each with a total load rating of 3.5kW. (see details of oven here). The kitchen already has a 20A double pole switch and a 45A dual outlet plate. Is the switch sufficient because I've calculated that the current is likely to exceed 20A? However, I'm not sure...
    • Katie
    • Thread
    • arial double load outlet ovens pole rating switch switches total
    • Replies: 15
    • Forum: DIY Electrical Advice
  7. F

    Total load on distribution board

    Hi im looking for someone to help me understand the total load that can be pull from a dis board. Ie: I have 3phase dis board on a 250amp breaker. The board is filled with mcbs of mixed ratings. However if I add the rating of each MCB together it far exceeds the 250amp breaker on the board...
  8. linuxthefish

    Maximum load for shaver socket in bathroom?

    Hi, what's the maximum load I can run from a shaver socket in a bathroom? Can I run speakers in the bathroom from this point? If that load is maximum, can I put extension cable into the bathroom and how long does it need to be away from the shower?
  9. A

    Load Calculations

    When calculating load calculation for sub-DBs and Main DBs breakers, as well as the final load at the end (let's say in Amps). how do you do it? Do you include a safety factor (to account for spikes) and a diversity factor (to account for the design factors - e.g. lights are only going to be...
  10. Joe S

    Opinions on the load of this cooker circuit???

    I have been to look at a job tonight for a new oven to be installed. The circuit is a 6mm T&E with 32a MCB. The appliance end of the circuit has the Electric hob (5.7kw) wired into a Cooker connection point and it also has a spur in 2.5mm for the old oven which has been binned. They have bought...
  11. D

    Electrical Load or Amps

    I have a small building to design. The main supply is from another building (existing) which is 3 phase and 63A protection (not sure about it). It is 7 way and 3 are spare. L1 is 96A, L2 is 54A and L3 is 84A. I am looking forward to use L2. But the new building have a load of 82.1A and...
  12. C

    LED 'Dummy Load'

    I'm having no end of issues with a current install. What I've got is two 3gang dimmer switches from Lightwave RF. Gang 1 - Auraled 240v 5w Warm White LED Dimmable Lamp x4 Gang 2 - Auraled 240v 5w Warm White LED Dimmable Lamp x6 Gang 3 - Auraled 240v 5w Warm White LED Dimmable Lamp x2 Gang 4 -...
  13. P

    Mains networking on split load board

    I am trying to use a pair of TP-LINK mains adaptors for extending the Wi-Fi in my 3 storey house. I cannot get the two units to communicate so I am wondering if it they would be affected by being on different RCD's of a split load board or would this not matter. Does anyone know which...
    • pyrosym
    • Thread
    • board electrical work load mains split
    • Replies: 6
    • Forum: UK Electrical Forum
  14. C

    Big load on a long run

    A customer has recently moved into hes new home and has a large shed fed with 2.5mm swa on a 80m run! Swa is protected by 20 amp mcb but the load at the shed end includes two 2kw heaters plus lights and sockets that he has been using and would like to continue to use. Volt drop calcs say he...
  15. L

    full load current of a 3phase 1.5Kw motor

    can anyone please help me with this. how to calculate th full load current of a 3phase 1.5Kw motor, i need to know this to set the overload relay to the value, thanks
  16. A

    RCD Tripping Under load

    I have a split CU and have just added a new ring (14 sockets) a 10.5k shower and lighting circuit. All of these are as a result of a third floor being added to the house. Everything works perfectly but when the shower is on and I use my drill in any of the 3rd floor sockets, the RCD trips. I...
    • Adders1
    • Thread
    • fault floor load rcd rcd tripping shower sockets tripping under
    • Replies: 11
    • Forum: UK Electrical Forum
  17. C

    throwing a switch on small load has fried equipment !! any advice please !!

    Hi guy's I am trying to seek some help on surges..... we have currently been carrying out testing across different sites for a big client. We have switched an isolator on whilst on load at the mains and it has cooked the equipment :( the particular building to give you an idea is a storage...
  18. Joe S

    Neff Induction Hob Power and Load question?

    I have a customer who is having a Kitchen fitted and has all the appliances picked out and ordered. The hob is an induction type hob and it says in the Kitchen Costing that it is a 20a Load required. When investigating the actual spec of the hob it states clearly that it is a 4.6kw Hob. I just...
  19. S

    Electrical load trending for a factory

    Hi all, looking for some advice on gaining a trend profile for the demand of our factory. At present, we have energy meters on all our larger bits of plant, consisting of ct's on each phase to a digital meter. The meter then gives out a pulse to our PLC which gives us our (in this case) monthly...
  20. S

    load neutral melted in 2 spurs

    Just been to neighbours house because he said cooker was not working. Turns out the fan oven was fed via a fused spur of what appeared to be the kitchen ring. However couldn't get continuity between feeds so is a radial on 32A breaker or spur feeding spur. (neutral on load side of spur had...
    • sparkatus12
    • Thread
    • load melted neutral spurs
    • Replies: 18
    • Forum: UK Electrical Forum
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