system

  1. T

    creating a proper grounding system

    Hello everyone my name is Tarek, i work as a concert and show lighting operator with over 20 years of experience in this field, so i have gained a decent amount of electrical experience over the years but i'm NOT a professional electrician i will try to explain my problem in details so this...
  2. M

    Does anyone have a copy of the C22.3 N0 1-15 Overhead system?

    Looking for a PDF copy of the C22.3 No 1-15 Overhead systems Code. Just need it for test and dont want to have to buy it to never use again..
  3. J

    Curious DNO MET on TT System

    Just completed an EICR which had an Unsatisfactory Report done earlier in the year by another Spark, i have a copy of the report and he's put the earthing system down as a TN-S and a ZE of 0.21. However as you can see the main earthing conductor (16mm) doesn't go to what appears to be a DNO MET...
  4. Bloomer26

    Car electrical system shutdown

    After around 40-1h of driving at night (lights/dash on) a few warnings start to appear; hill start assist unavailable, vdc unavailable, yellow lock symbol appears(immobiliser unavailable) then finally the dashboard and headlights intermittently turn on and off whilst driving. (Radio still works)...
  5. Mark42

    Earthing/bonding of independent system inside existing building

    I've volunteered (!) to install a complete theatre lighting system in my local sports hall, so the stage can be used for theatrical productions, bands and so on. It should be fun. Part of the deal is that the new system is to be completely independent of the existing installation. It will be...
  6. S

    Am2, what size cable for the heating system

    Hi everyone I have my am2 resit coming up and was wondering what size cable do you use from the wiring centre, to the programmer, and what size cable is used from the wiring centre to the thermostat. I thought it was 1.5, but wasn't sure. Any answers will be much appreciated, thanks a lot.
  7. J

    Best battery system to add to existing PV installation

    Hi, I'm new to this forum. I had a 4kW PV system installed in 2011 with SMA inverter. It has performed without fault and I'm now considering adding battery storage. I'm looking for advice on the best sort of system to use, and manufacturers and installers in SE England. My estimated annual...
  8. H

    Thermal print head for a parking management system based on Raspberry Pi pico and HMI

    Materials to be used 1、STONE STWI101WT-01 2、FTP thermal printer head 3、Raspberry Pi pico 4、Coin-operated machine Function The control function is displayed on the serial screen, the main interface selects the floor, after entering the main interface selects the parking space, at the same...
  9. R

    Help please to understand whether my PV system has been correctly installed?

    I have recently had installed an 8 PV panel and inverter on to my roof. This was a local authority initiative which was installed free of charge. The system has been working and reductions in my electrical usage is being assessed. I was so impressed with the reductions that I have had a further...
  10. G

    Alarm system wiring - Daisy chain

    Hello I’m a relatively new spark and have avoided installing wired security alarms instead opting for wireless systems for customers. I have a rewire currently and the customer is wanting a wired system. Am I right in thinking I can daisy chain the sensors and keypads? They have a three...
  11. O

    Multi-fuel boiler stove connected to existing heating system using a relay

    Hi all, first of all I'm not a sparks so forgive my ignorance. We are currently getting a boiler stove installed. This involves connecting the plumbing and some electrical to our existing heating system. The Plumber has requested that our electrician installs a spur at the location of the...
  12. T

    How to wire a comms wire to a Battery storage system?

    Hi, We want to buy a Powervault Battery/Inverter/charger storage system. The Powervault must be able to read a current transformer, clipped on to the incoming mains line next to the consumer unit. This current transformer module has an ethernet connection. The following Powervault...
  13. T

    Battery/solar/inverter system gives inaccurate power readings

    Hi, I have purchased a battery/inverter/solar system for my home. I also have a smart meter, and an app which links into my smart meter to get the power data from the smart meter. The battery/solar/inverter system also tells me how much energy I am using. However, its readings are not accurate...
  14. T

    How do you "pair" a Zappi and a Solar/Battery system?

    Hi, I have a Zappi charge point, and a myenergi Hub. I also have a battery/solar system. How do i "pair" these together? Or dont i need to do anything?
  15. O

    How to solve an iPS alert in SCADA system

    Hi everyone! I just took over an SCADA system and i discovered we have an iPS with an UPS. There have been a trouble with iPS. A long beep every 3 seconds with LED "communication indicator" is RED. It seems battery is missing. I have just graduated and have no experience. How can I do to solve...
  16. S

    48 v adjustable relay for over system hot water heater

    How to have a hot water heater turn off below 50 v and on at 52 v. I have a 48v off grid pv system running our cabin. It has a 5000w inverter. I have been heating our domestic hot water during the day with 120vac and manually turning it off at night in order to preserve the battery capacity...
  17. W

    S plan plus heating system help needed

    Evening, im going to try and explain the heating system im currently wiring, I have most of it wired up, there’s just a few bits im not sure of so any help/diagrams would be very helpful. heatmiser UFH 8 wiring centres are used in both cupboards. In the utility room cupboard (cupboard 1)...
  18. W

    door entry system with log

    Hello, I am looking for a door entry system with fobs to operate a mag lock on a door. Ideally I would have a system which records of log of what fob and when opened the door. What makes would you recommend looking at or avoiding. Thanks
  19. E

    System Impedance

    Hi Guys found this in a Ariston 9.5kw Water heater instructions quote ''The product should be connected only to a supply with the relevant system impedance no more than 0.237 ohm. Restrictions to connection may be imposed by the supply authority on the use of equipment in the actual...
  20. O

    SRS Airbag system

    Hi all! I have a Toyota Granvia '96 KCH10W (basically a HiAce) which is throwing an error with the SRS airbag light staying on permanently. These are Jap imports which are next to impossible to find real service information on, and I don't have the thousands of dollars I have been told to...
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