H.T. oven wiring diagram question

[melsdad]

I am ready to wire the control for my H.T. furnace. I am using the diagram out of the stickies here:

http://www.bladeforums.com/forums/s...eat-Treat-Oven-Wiring-Schematic-Future-Sticky

Although I know it is not necessary, but if I wanted to keep the two LED lights in the diagram The heat on LED needs to only be able to handle 12 volts correct?

But the power on LED needs to be able to handle the 220 volts correct?

 

[Kevin McGovern]

I believe that is correct. Although as you indicated, the Power LED is redundant, since the PID display will be on when the main power is on.

 

[timgunn1962]

I use a 230V LED in parallel with the elements for heat. The DC output from most controllers is usually very limited and it's maybe a bit optimistic to ask it to handle both SSRs plus the LED.

On my AutomationDirect Solo controller, the spec gives 40mA max DC pulse output and the Fotek SSRs are specced for 20 mA each.

 

[Lieblad]

A simple LED for an indicator draws about 10-15ma. My favourite 12v packaged LEDs are made by Corby. Last time I bought were about 1$ each.