wiring a switch

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wiring a pushbutton on/off switch for AC. switch has comnon, normally open, normally closed. i think the power or LIVE goes in the common and comes back out at normally closed. the other stays free. does this sound right?
heres a pic. web page. http://adafruit.com/products/915

[Ron_E]

Re: wiring a switch

wiring a pushbutton on/off switch for AC. switch has comnon, normally open, normally closed. i think the power or LIVE goes in the common and comes back out at normally closed. the other stays free. does this sound right?
heres a pic. web page. http://adafruit.com/products/915

From the link: "This button is an on/off switch button, when you press it the 'normally-open' contact shorts to the common contact and the button stays 'pressed'. When you press it a second time, the button springs open, and the contacts open up again."

If you want to use it as an on/off switch, connect the power to the normally open connector and the load to the common connection. Push the button and load is connected. Push the button again and load gets disconnected. If you connect the power to the common connector the unused NC connector will be hot when the switch is off. It's safer to wire power to the NO connector and put heat shrink tubing on both connections. Hope that makes sense.

Ron

[neildavis]

Re: wiring a switch

That switch is only rated at 3A. That's not suitable for the Meanwell 48V power supply, which is spec'ed at 30A inrush current. You are probably going to have to switch the AC power with relay contacts and use the nice LED-lit switch to activate the relay. Or else use a different switch.

Also: asking questions about wiring line voltage is maybe crossing a line where some people may not feel comfortable responding. There is a real danger of electrocution or fire with AC wiring, and asking people for guidance is potentially putting the responder at risk. I know that may sound paranoid or even stupid, but you need to be careful these days. :o

[[email protected]]

Re: wiring a switch

thanks. can you suggest a relay?

[duanebro]

Re: wiring a switch

sorry, if anyone saw that, I have been out salting all night.


You should be able to find a mains switch that can handle the current.

[[email protected]]

Re: wiring a switch

nevermind, i just went and bought a proper toggle switch.

[thekorvers]

Re: wiring a switch

That switch is only rated at 3A. That's not suitable for the Meanwell 48V power supply, which is spec'ed at 30A inrush current. You are probably going to have to switch the AC power with relay contacts and use the nice LED-lit switch to activate the relay. Or else use a different switch.:o

+1

What is your application?

[[email protected]]

Re: wiring a switch

115ac house current to a meanwell ps.
i just went to menards and got a 120vac 20amp toggle switch. i got enough stinking lights. it for the sure 2x300 amp board.

[neildavis]

Re: wiring a switch

thanks. can you suggest a relay?

Obviously, the toggle switch you got will work fine. But another approach is to use a solid state relay that will work off the 5V from the wallwart. The nice LED switch could control power to the wall wart, and then the solid state relay would turn on the switching supply. The solid state relays are usually easy to mount in the chassis and should work fine with the switching supply. They are a bit pricey new (about $30 for ~20A), but you can usually find some at reasonable prices at the surplus stores.

[[email protected]]

Re: wiring a switch

thanks neil, it was starting to get a bit over my head. plus, concerning asstedics, i have 8 leds around my volume knob, which is in the center,so a blue light on the left but not on the right would have looked funny.
i think im in good shape.
thanks for the support.

[neildavis]

Re: wiring a switch

Don't get discouraged. I've built a lot of amps, and I'm always amazed at how long the chassis work and final wiring takes.

[[email protected]]

Re: wiring a switch

Thanks. I can't imagine doing a real kit.