PID REX C100 temperature controller contact connection 

bro what is max set temperature?

@irmux skeptic thank you, I already found it.

Thanks for the video, Can I use AC to AC solid state relay instead of DC to AC ?

@@adeosunfirstman1246 I have no idea. Sorry :-/

maybe you are using the wrong thermo couple?

yes, but your SSR will have to be more powerful... 4000w goes up to 40 Ampers, most SSR ( relays ) are coming only for 25A. The SSR will need a heatsink to discipate the heat, ok? Your wire will invitably need to be way thicker than that of the video.. if I'm not wrong, 40A will require a wire of approximately 6mm ( considering the ( hot plate ) is not really far away from the SSR. You need a little understanding of how the relay works to see that the load is not going through the controller.. The temperature controller is only turning the relay on and off according to the temperature limits you set.. the load is going through the relay ( SSR ) that is why it will need to resist the 40 ampers that your hot plate will take... got it ? so, good end connectors, soldering preferably, thick wires, a good heatsink ( and if you can use a cooler to give support to the heatsink of the SSR ) and you are good to go.

@@TeacherBrunoOneil He might be using 220V, 4000W is only about 20A in this case.

@@stephenho6007 that's true.