PID Tripping Electric Element

[JayUnt]

I have recently got the Brewhardware Hot Rod heat stick which has a gfci plug and I put together a temperature controller using a pid and ssr to turn it on and off to maintain a specific temperature. After I wired up the temp controller, I tested it using a lamp and saw that it was working.

However, when I plug in the heating element to the controller it immediately trips the gfci. When I plug the heating element in directly to the wall, it works like fine.

I double checked the wiring and everything looks like the diagram says, and it does work with the lamp, so it seems like its fine. But since it keeps tripping, I assume I did something wrong or didn't get the right parts for my temp controller.

The heating element is 1500w http://www.brewhardware.com/product_p/hotrod.htm

And the controller is made up of this pid https://www.amazon.com/gp/product/B007H5GQUY/?tag=skimlinks_replacement-20

which controls this SSR. It has an output voltage of 24-380V AC and output current: 25A
https://www.amazon.com/gp/product/B0087ZTN08/?tag=skimlinks_replacement-20

When I emailed brewhardware they said the controller needs to be "rated for 15amps (or at least 13) at 120 volts".

Is there anything you see wrong with this setup? Anything you can think of that I can test.

Thanks for your help!

 

[Bobby_M]

The GFCI plugs are meant to trip upon power failure so you will have to do your switching AFTER the GFCI plug. In other words, move the GFCI plug to the wire that supplies your control box and then wire the hotrod to the control box output with a standard plug.

 

[JayUnt]

Ahh so when the ssr is turned off, the gfci gets triped because it considers any interruption a failure. That makes a lot of sense.

Ill chop off the gfci plug and my controllers plug and swap them.

Thanks!

 

[JayUnt]

I made the swap and it works perfectly. Can't wait to use it with my next batch.

Thanks!