Been enjoying some time away from work and have been working on my PID control box for my heat-treating oven. I found very good use for the new mini mill and milled the metal control box openings...... WOW where has this tool been all my life!
The control box layout plan is to have a main illuminated power switch (15A fuse), with a 2A fuse for the PID power and then have an illuminated switch for the power to the element as well as a limit switch with an indicator light for the element to indicate a "hot" element. Sticking a piece of steel in the oven with a "live" element is...... well not a good idea. Here is the control box face.
Inside the control box....
Here is my planned wiring diagram.....
Note I am an engineer but not a EE or electrician by any means, so I thought I would have a little "internet qc" by those that have built PID smoking units to verify I don't have any diagram flaws. Note I did add a dashed N line as an alternate path to avoid doubling up on the terminal block screw. I am also running the LED L lead through the terminal block to avoid an inline splice.
Any input from the more experienced would be appreciated.......
The control box layout plan is to have a main illuminated power switch (15A fuse), with a 2A fuse for the PID power and then have an illuminated switch for the power to the element as well as a limit switch with an indicator light for the element to indicate a "hot" element. Sticking a piece of steel in the oven with a "live" element is...... well not a good idea. Here is the control box face.
Inside the control box....
Here is my planned wiring diagram.....
Note I am an engineer but not a EE or electrician by any means, so I thought I would have a little "internet qc" by those that have built PID smoking units to verify I don't have any diagram flaws. Note I did add a dashed N line as an alternate path to avoid doubling up on the terminal block screw. I am also running the LED L lead through the terminal block to avoid an inline splice.
Any input from the more experienced would be appreciated.......