relay

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  1. B

    trying to wire a DPDT 12v relay in truck

    HI, Hoping someone can help me here as I am a novice. This is on a vehicle so I hope thats ok but I think it pertains. Long story is I have a old truck that has a valve that went bad and I cant get them anymore. It has a switch on the dash that has a single wire back to the valve that only has...
  2. B

    Trailer Charging Circuit - Relay

    Thanks for looking at my question I have a vehicle that I charge my trailer battery with. The charge circuit is 10 metres via an andeson plug rear of vehicle. The cable size is 25mm2 and I'm wanting to fit an ignition fired relay to the circuit. Trouble is the standard 80a relay is a spade...
  3. murd_the_nerd

    1950s IM Power Relay Timer Help for Solenoid Valves

    Hi there Complete novice electrical wise. I am refurbishing an old 1950s Injection Moulding machine and looking to replace the Power Timer Relays. So far with no success myself and two attempts. It appears I need some expert help. I would love direction on the type of timer I need and a link to...
  4. Weezy

    Wire Pump to Diverter Valve ‘Brown’ or use a relay?

    Iv wired in lots of regular Y & S plan heating systems with the regular one pump. However this job i’m going to tomorrow (not seen it yet) has 4 Heating Zones and 1 Hot water Zone, the plumber said i need to ensure when one zone runs it doesn’t back feed and cause another zones pump to run, he...
  5. H

    Relay coils blowing/shorting

    Ive got a problem with relay coils shorting out. 24v DC coils, measure 1k ohm As soon as I apply voltage they short out and put the power supply into protection System has been working fine, until a detector went into safety and opened the circuit cutting the supply to the relay's coil...
  6. J

    Reverse Power Relay?

    On my boat, I want to connect my DC-to-AC inverter to a 120vac bus normally powered by shore-side power (power grid). I DON'T want that shore-side power to feed back into my inverter. When I connected the inverter output to the live, shore-powered bus the inverter alarms ("AC OVERLOAD") and...
  7. FiguringOutLife

    Expand my relay knowledge.

    I'm looking to expand my knowledge of relays. Specifically at this point in time, how to know what relay I need for what job. An example for the moment is an industrial dust extraction system that I'd like to switch on and off with an esp microcontroller (5v). Anyone willing to enlighten me?
  8. M

    pulling my hair out trying to fit smart relay.

    hi im trying to fit a smart relay thing on my stairs light there is i switch at the top and bottom. smart relay has 6 connections for no neutral switch have it working on bench as follows. L live L1 L1 from bulb COM to switch com S1 to downstairs com S1 works great on bench . when i try on my...
  9. K

    Relay 220V 2 input and 1 output Question

    Custom hot tub with a spa pack controller. Everything is 3 wire (red, black, white) 220V. Everything is grounded with lugs. Goal: I have two jet pumps and one air blower controlled by the spa pack. I would like to use a relay system to prevent the air blower from turning on unless one or...
  10. G

    Audi A4 B5 1998 relay

    Audi A4 B5 1998 I have installed LED turning bulbs now have hyper flashing can you advise the best way to rectify
  11. A

    Relay to turn power off to solenoid

    Hey everyone, I am new here and by no means an electrician. I have a solenoid valve that needs to turn off when my ignition turns on. I also would like to turn on the solenoid with a switch when the valve is needed. Here is my attempt to wire a relay to achieve the needed task. Any...
  12. A

    Motor relay on Radial Arm Saw

    I have an old DeWalt 721 Radial Arm saw that recently stopped working. Initially I thought this was because one of the Start / Stop buttons disintegrated (came unscrewed) and spread its workings all over the floor. I subsequently changed both the switches like for like. (Rafi 1.10001)...
  13. E

    Overcurrent relay setting and position

    Good evening, I have a few questions requiring your expertise: 1) For a motor with a nameplate FLC of 44A: The overload relay trip setting should be set to 44A when connected in Delta and set to 44/(root 3)=25.4A when connected in Star. Is this statement correct? 2) Does the position...
  14. 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...
  15. J

    Wiring a relay help

    Hi, could someone tell me how to wire a basic relay switch please. So I want to power my car stereo from my leisure battery when the ignition is off. Do I use a 4 pin relay with (30) connected to the leisure battery and (86) connected to the ignition. Or Do I use a 5 pin relay with (86)...
  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. H

    Questions about relay 232 control protocol editing

    The 232 protocol command of AMX's NP-Rel8 relay has to hit the enter key at the end, which command can I use instead of it. Now this central control I have does not support the hit enter command.
  18. M

    Latching relay chattering.

    Can you supply a latching coil through it's own set of NC contacts? Or would it try to drop out as soon as it tries to pull in.
  19. Rockingit

    Recommendation for an RF tx>rx unit across a relay, please

    I need to find a decent quality ('set and forget') rf switch that can be triggered by a contactor or heating relay, distance is only about 10-15m from one outside pump house to another, standard London brick jobby. I've lost track a bit of what's out on the market these days - any suggestions...
  20. A

    Why not use a latching relay to power the headlights instead of two regular relays?

    I was wondering why why not use a latching relay to power the headlights instead of two regular relays? It seems less complicated to me.

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