12v

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  1. H

    Why can 12V DC fans be so noisy ?

    Two new 12V DC fans (100mm and 75mm inline/duct) are extremely noisy. Powered from household 240V mains with the usual DC transformer/ power supply - correctly rated for DC supply to these DC 12V fans). Why is this happening ?
  2. Michaelp

    submersible wire for 12v spots

    I need to install 3 spots 12v 5W lights under water in a small bond, about 20cm deep. What type of wire i should use in this case ?
  3. alexhibbert

    UK 12/24V Battery wiring and charging advice

    Hello all, I'd like some advice on wiring up a 24V leisure power system. It seems to work so far, but my wiring doesn't seem to match many other diagrams online. I'm worried that I'm damaging batteries or wasting power. I have 4x 12V Lead Carbon batteries (all identical). I want to have 24V...
  4. C

    Wall switching method for 12v adapter powered devices?

    I'm not a pro, just looking at strategy for a village hall install. In the bar area, there are a number of devices which need to be switched on in one go. Some LED lights, a video monitor, wifi externder, other low power stuff. They are the type with the plug in 13A to low volt wall adapters...
  5. S

    Selecting the proper solar panel/ battery system for 12v LED strip

    Hi all, Complete novice here, but I'm trying to learn. I am making a solar powered, back-lit estate/ driveway entrance sign, and am stuck regarding the correct wattage, amperage, etc for the panel and battery. I'm planning to use 5 meters of 12v 18w strip, but would like to be able to use...
    • Sign Guy
    • Thread
    • 12v battery led led strip panel proper solar solar panel strip system
    • Replies: 1
    • Forum: Lighting Forum
  6. J

    12v cabinet lights into light circuit

    Please help, I have just purchased wifi TCP strip light for the kitchen (multi colour and dimmer ) With a plug. I was really hoping to have them controlled via a 3 gang dimmer switch which controls other lights in the room. The plug has a 12 v transformer built in so I’m guessing I can’t cut...
  7. O

    Fuse size for 12v hydraulic diverter valve

    Hi I’m about to wire up a hydraulic diverter valve to add a 3rd function in my 60hp tractor front end loader. I will draw power from my ignition but I’m wondering what size fuse I need to run?
  8. Scots John

    Pure sine wave inverters. 12v /230v

    I routinely upgrade Motorhome systems. I do use Chinese made pure sine wave inverters from evilbay, usually 2500w/5000w (peak). I always sum the maximum off grid Continuous draw and double it or more. No problems so far, BUT I have heard of others Having problems. i have pushed consumption...
  9. H

    Regulations for 12V / 240V wiring in campervans

    So wiring in campervans is included within the scope of BS 7671. In a scenario where someone is being paid to build from scratch or modify a system, is there a minimum level of qualification required by law? Would a "Part P NICEIC domestic installer" be appropriate to carry out and certify the...
  10. Y

    Legal requirement for certificate in 12v home?

    Thanks for the add. I'm writing about a friend living in a part-tent, part-shed home with young children who has devised her own 12v set up with advice from pals and online info. I don't doubt her ability but am concerned she should get it checked by a real live electrician. Is she supposed to...
  11. T

    UK Coolbox not working from mains

    Hi I have a 40L Halfords coolbox which works off 12v cigarette lighter, but won’t work of the 13amp plug. I have changed the plug fuse, but to no avail. Any ideas? Cheers Newbie
  12. M

    GU10 LED on 12V DC

    I have garden LED light running fine through a transformer.. LED Driver Adapter AC 220 -240V To DC 12V Transformer But am now trying to add a new downlight with a GU10 LED bulb, however the bulbs are not lighting, looking at the bulb box it asks for 220-240 AC I am struggling to find a GU10...
  13. S

    DIY: Cable thickness for 250w 12v Wind Turbine 40m

    DIY . Hello, I own a Marlec Rutland 913 250w , 12v Wind Turbine that I want to erect on land outside my caravan. The turbine will be 10m in the air and will be located about 15m from my caravan. I will size to 30 meters of cable. The charge controller the wires terminate to has a 20amp fuse...
  14. mak

    Solar 2 gang 1 way ligths on 12v system

    This is what I want, 2 lights operating on the same 12v circuit individually. Will it work? Because there are two paths when both lights are turned on? My brain is scrambled.
  15. C

    12v solar installation - covered by Part P?

    Hi all I am looking to install a 12v system on my roof terrace to power a few LED lights. I was going to connect a 12v transformer into an existing FCU inside the property, and then run a 12v circuit from this to power the lights on the roof terrace. However, I understand that this is Part P...
  16. F

    Building - 12v LED Motorcycle Rear Tail/Brake Light

    Hi guys! Hoping you can help me. I'm making a custom 12v motorcycle brake light. I'm at the stage where I need an LED board/unit that does both tail and brake lights. I haven't finished machining the light housing yet as I need to know the board dimensions. I'm a motorcycle mechanic by trade...
  17. Lister1987

    Next power tool - 12v or 18v - SDS, Multitool or something else?

    As title. Looking at my next addition - anniversary and crimbo coming up so want to get the pennies saved ahead of time. Currently posses 2 Milwaukee M12 tools; Impact Driver and Combi Drill and love them, get constant abuse at college and home and are a joy to work with. Looking at the next...
  18. M

    12v conversion of 230v light fitting.

    Hello, I am wondering if this is allowed, I dont have a big need to do such a thing, just would like to know how it would stand up with the law and regs etc If you have a class 1 (or class 2 for that matter) light fitting and you wanted to convert it to 12v to make it PELV, for use in an old...
  19. J

    UK Help! Wiring a 12v camper van roof fan

    Hello, as an amateur camper converter with limited electrical experience, I was wondering if some kind soul could help please? I bought and fitted a 12v Maxxair Deluxe roof fan, which I temporarily fitted unfused and straight on to the leisure battery - it worked fine. However, I then...
  20. S

    UK 12v dc motor forward reverse off switch

    Hi all, had a job with a swimming pool bubble cover that rolls onto a spool with a small 12v dc motor, it had a reverse key switch to roll and unroll the cover which has had a load of water in and got corroded and stopped working. Thought I'd taken a picture of the switch when there but I havnt...
    • suffolkspark
    • Thread
    • 12v dc motor forward motor off reverse switch
    • Replies: 7
    • Forum: UK Electrical Forum
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