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  1. D

    DOL Starters Automatic Change Over

    Guys I have 2 DOL starters which share the same supply for 2 toilet extract fans I have a selector switch wired up and and a set of auxilliary normally closed contacts on each of the DOL starters to prevent both fans running at the same time. If possible could some one point me please in...
  2. K

    How to bypass control board in landscaping transformer

    Hi, I have a low voltage landscaping transformer. The control board is bad so it cannot be turned on. I’d like to bypass the controller and connect the wires directly to the transformer itself (the toroidal). However, when I open it, in I see the white (neutral) and black (hot) wires input to...
  3. R

    Wiring a relay switch to power up a machine using remote control?

    So this is a question around my woodworking workshop. I have a dust collector which is connected up to various machines around the shop and want to be able to switch it on with a simple remote control I carry with me. I purchased this relay from Amazon: QIACHIP Universal Wireless Relay Module...
  4. littlespark

    Adding speed control and reverse to wall fan

    Local business has 3x large extract fans that simply turn on and off with individual switches. Can any brand of this type of fan be retrofitted with say, a ventaxia fan controller with speed and reverse? Existing fans are Ziehl-Abegg. Photos showing existing wiring, and diagram on cover lid...
  5. R

    Grundfos Magna1 twin pump control

    Hi to all, I have got dual pump set Grandfos Magna1 installed. Those pumps can be constantly running when paired wirelessly. However, I would like to be able switching them on and off separately, for example 3 hours pump1 is running then pump2 for another 3 hours. To achieve that I assume...
  6. Jurassicsparky

    Remote control of water pump

    Hi, I'm designing a wireless switching system for a cattle water trough. I'm looking for a float switch which would send a wireless signal to a receiver 300m away next to the pump and bring the pump on when required. There is line of sight between the units. At the moment the pump is switched...
  7. leehawa

    On and off timer to control a pump

    I am looking to switch on a Grunfos pump on a megaflow hot water tank with a wireless Rf switch I am looking for a timer which when it receives a signal just comes on for 30 seconds to a minute and then shuts off I am not looking for a 7 day programable timer just one that will come on when...
  8. z323791

    How to control two Power sources from one switch

    I have two sources of power supplies one coming from my main wall socket 2nd is coming from my PMA now I have two issues if you kindly answer my following questions? 1. I want to use either the main wall socket or power from PMA at a time what type of switch I should use and how to wire it? I do...
  9. M-B-Electrical-Services

    Recommended reading for motor control circuits

    Hi all. Just a quick one really. Some of my work has started to creep into the industrial sector and, as such, I'll need to do a bit of research in order for me to be able to fulfil my client's needs. The specific sector is Fire Sprinkler Systems so it'll be single/poly phase compressors...
  10. Mike Johnson

    Immersion heater control

    Still have an old clock timer for our immersion, but thinking that using our oil boiler during the summer is possibly going to be more expensive than electric on overnight economy 7, what do you guys recommend,
  11. S

    Building control self cert

    Hi all, If I aren’t part of one of 2 schemes is it possible to notify building control of your work? If I’m fully qualified and competent in installation and inspection and testing, can I issue a EIC with test results directly to building control without paying a fee and having an inspector...
  12. T

    Where can I find a wiring diagram for 3 way switches to control multiple outlets between them.

    I am wiring 2 outlets in the ceiling to control 2 plug-in florescent shop lights in my garage. The 3 ways are at each side of the garage at the 2 entry doors. The way I have it wired right now, both lights come on at either switch but turn off if either is unplugged. I would like both outlets...
  13. Need_more_wago's

    DALI Emergency Lighting Automated testing via a control system

    Hey, with regards to DALI Emergency Lighting Automated testing via a control system, does anyone know how best to overcome a fitting that is reporting... 'Duration test max. delay exceeded' This is preventing the DALI EM fitting from carrying out its requested 3-hour Duration test. Batteries...
  14. C

    Hi all, my name is Darren and i am the owner of control 101. we build control panels.

    Hi all, my name is Darren and i am the owner of control 101. we build small to medium control panels and are always looking for new customers, so if you have a control panel that needs building feel free to get in touch.
  15. T

    abs and traction control on after 4th brake light install

    I just installed a 4th brake light on my 2014 scion frs wired thru my tail lights. The moment I hit the brakes my abs and traction control lights turn on. I thought of installing 1way diodes to stop reverse flow of curent do you guys think that may work? Or is there something else I should do?
  16. S

    Vw electrical vacuum control valve n75 - Ohm values

    What is a correct Ohms value for n75 valve on vw 1.9 TDI, 96kw engine? I have like 16 Ohms but if I am not misunderstood on spec it says more than that. Does it mean my valve has malfunction? I checked almost everything else but my car still has delayed boost.
  17. B

    Control panels schematics reading

    Hi are there any courses available for fault finding on control panels,reading, following schematics
  18. B

    Building control confusion!!!

    Had a lovely conversation/argument with building control this morning, the scenario is this, Completed job (4 flat rewire) EIC’s sent to client as normal, building control notification done via NICEIC portal, all good (you’d hope) Then received email from client (the architect) to inform me that...
  19. S

    Wifi control of 3 heaters - Sonoff?

    I'm installing 3 x 500w heaters in an outdoor room and want to be able to switch them on/off via wifi. I was considering a single Sonoff Basic R2 like this to add to the circuit: Itead Sonoff Basic R2 Wifi DIY Smart Remote Control Switch | eBay - https://www.ebay.co.uk/itm/353403455199 Will...
  20. M

    Control one light from two circuits

    I have four exterior 110v light fixtures in the front of my house in series on a single switch. On a different circuit, I have six 110v back yard light fixtures in parallel on a single switch. I want to add another light fixture on the side of the house that will turn on if either or both...

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