relay

  1. 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...
  2. 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?
  3. 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...
  4. 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...
  5. 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
  6. 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...
  7. 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)...
  8. 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...
  9. 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...
  10. 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)...
  11. 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...
  12. 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.
  13. 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.
  14. 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...
  15. 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.
  16. B

    Removing a relay

    I'm trying to learn more about relays. Can someone link to a resource that describes how they work? I mean like a wiring diagram of 1L1 3L2 5L3 2T1 4T2 6T3... Here is a LC1K09 that is connected to a lighting circuit. What are the alternative ways to remove/disconnect it and instead have the...
  17. O

    Issues using a time delay relay for my second fuel pump (diagram included)

    I'm using the stock fuel pump wiring to trigger two different relays for my two fuel pumps on my car built for drag racing. The first relay is a normal relay and the second relay is a Beuler time delay relay (it's a BU-508TD model which has since been replaced by the BU-509TD, but they function...
  18. F

    Question for double coil DC relay

    Hello,can someone explain what is lagging auxiliary contact used for in DC relays(control circuit)and why is it N.C? Thanks
  19. K

    Negative switch relay

    I wish to run a 12v fan in the cabin of my car, only while the engine is running. I wanted to use the alternator charge wire, connected to a relay, so when it switches off, the relay opens. But my car doesn't have such a wire on the alternator. I'd like to use the oil sender wire. This is a...
  20. R

    Wire gauge query when doing relay conversion for headlights

    Hi All, The headlight (Dip and especially High Beam) on my motorcycle, is know to be able to be greatly improved when converting the wire feed instead of being via the switch, over to a more direct feed via a couple of relays. At the same time instead of the 18 gauge wire via the switch being...
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