heat

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  1. S

    Heat pump controls

    I’m trying to get my head around how the controls work on heat pump systems . Usually on a s plan combi boiler let’s just say 2 zones I’ve learned that power to spur from spur to Timeclock to stat calls for heat switch live from stat on to brown on the motorised valve micro switch closes...
  2. buzzlightyear

    heat source pumps wiring

    any body point me to the right direction on heat pumps wiring ,or done any or pdf how the wiring done on them .
  3. Electrical2Go

    Beat The Heat With Low Priced Fans and Air Con

  4. S

    Hispec heat alarm

    Hispec mains heat rf alarm in situ for 2 years no problems..started beeping intermittently changed battery still beeped..changed unit to 1 with lithium battery fine for 2 days then started beeping...meanwhile the original alarm on a shelf in a different room not beeped since ...any ideas?
  5. Alla Musica

    How far do downlight cans affect lamp life?

    Looking through the fire-rated downlights out there on the market, Integral Evofire claims its canless design would let the heat off and hence optimize lamp performance and life. On the other hand, the JCC Fireguard, albeit also rated for LEDs only, ironically, still comes with a matt black...
  6. C

    Is 4mm heat resistant cable okay for 7.5kw range cooker?

    The electrician that installed my cooker circuit put in 10mm cable with a 32a fuse, a 45a cooker switch and 10mm cable to the backplate for behind the cooker. He put this size in as I didn't know what size cooker I was going to be getting. I ended up getting a 7.4kw range cooker and the...
  7. M

    UK Heat pump faults?

    Two call outs to new build burnt out heat pumps in a week.
  8. HappyHippyDad

    Smart switching for 3.5kW heat pump?

    My customer wants to be able to switch his heat pump (3.5kW) for his swimming pool on and off remotely, he also wants to be able to set times for it to switch on and off during the day. He wants to be able to do this remotely too (i.e. with his phone). In addition, he has a 380w pump he wants...
  9. J

    Branching off baseboard heat

    I need to add shop lights to my basement. I currently have one baseboard heater that runs straight to the breaker. Its a cadet 240v/4.2amp 1000w heater wired directly to a 20 amp double pole breaker.. my question is can this wire be spliced into a junction box and used this for my shop lights?
  10. T

    building a custom sublimation heat press

    Hi as per title I'm building a sublimation heat press. i have a 1000mm x 250mm x 8mm sheet of cast aluminium. i will be using a thermostatically controlled silicon heat mat to regulate the heat up to a maximum 200 degrees c/ 392 degrees f. i want to be able to reach my maximum heat in under 3...
  11. Dan

    Ground sourced heat pumps - how they work

    https://www.theguardian.com/technology/ng-interactive/2023/dec/23/heat-pumps-science-visualised?CMP=Share_AndroidApp_Other This guardian article explains it really well with awesome graphics. How many of you guys are into this?
  12. T

    Sun heat on caravan cable causing meter box circuit breaker to pop?

    Could the sun’s heat on a caravan mains supply cable cause the fuse/circuit breaker at the meter box/supply end to trip?
    • TimGemm
    • Thread
    • box breaker cable caravan causing circuit circuit breaker heat meter meter box
    • Replies: 20
    • Forum: UK Electrical Forum
  13. A

    Underground Rectangular chamber heat calculation

    Calculate the temperature rise in a system consisting of six conductors carrying 1500 amperes each at 132kV, insulated with XLPE, and spanning a cable length of 9 meters. The system is enclosed within a chamber with the following dimensions: length 10 meters, width 10 meters, depth 3000mm. The...
  14. J

    Advice needed about installing High Heat Retention storage units

    Firstly, thank you for taking the time to read this. I am not trained in electrics whatsoever, I am a just a home owner looking for advice. I have a flat that I would like to improve the EPC rating on. A QS has advised that I need to install High Heat Retention storage units and a dual...
  15. U

    Using heat shrink to stop data cables breaking?

    Hi all, I was thinking to use heat shrink to strengthen usb cables where the cable enters the connector. I find the insulation starts to crack over time as the cable is bent where the insulation joins to the USB connector. This would be as an alternative to insulation tape. I haven't used heat...
  16. P

    Adding a heat sensor to an existing, interconnected smoke alarm system

    I currently have a home with 7 interconnected, hard-wired smoke detectors. I have a hard-wired heat alarm in the garage that I need to have interconnected to the rest of the system, per local regulations. My solar installer added the heat sensor but does not seem to know how to handle the...
  17. pirate

    Anyone watched the TV documentary tonight about Heat Pumps and electricity supplies in general?

    Seriously just wanting to have a discussion on this huge issue. Clearly, there are not enough competent installers of heat pumps, so we may see some scheme whereby one can get "qualified" in a short time. I have views on this, and I have views on everything the documentary covered, but my...
  18. CopiamElectrical

    Central heat courses?

    Central heating courses/ Smart Control Heating / S Plan / Y Plan / Wiring Centre. Best course provider. Currently looked at tradeskills4you which is a 2 day course.
  19. C

    Heat trace caught on fire

    Hello, I am in the process of conducting an investigation on a heat trace that was found on fire. The jacket around the wires could have been damaged from the installation of a regulator that was replaced prior, but I can not 100% confirm the damage since it burned in the process. The...
  20. S

    Heat Saver system what is it?

    Hi. I'm on my way to remove a faulty one of these. A 'heat saver' device fitted to a boiler. I haven't seen it yet but it seems to be a relay connected to a boiler thermostat. Has anyone seen these before? I'm guessing I can remove it all and just hard wire the system so it doesn't interfere...
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