Nessie's Dope Ass Brew-Haus V2.0

[doug293cz]

Ok, your terminology was a bit odd. When you said splice, I thought you meant connect together. Sorry for the misunderstanding.

With a load having a significant impedance (AC resistance), connecting L1 on one side and L2 on the other is not a short. A short is equivalent to a ~0 ohm load. A 5500W 240V element has reisistance of about 10.5 ohms, so will draw about 240V / 10.5 ohms = 22.9 A. The contactor coil has an AC impedance more like 9600 ohms, so will draw something like 240V / 9600 ohms = 0.025 A or 6 W power. Note that the DC resistance of the coil is lower than the AC impedance, and will be about 1800 ohms (if you measure it with a meter.)

Brew on

 

[Nessie]

Groovy. I'm a mechanic/lab tech by trade, doing the best I can with the terminology. Thanks for the input!

 

[Nessie]

Alright, so the contactors for the heaters are re-wired and work great. The only thing i've got now is the problem with the BCS output signals. I unplugged everything but ground and the power supply (which is actually a 9v dc power supply vice 6v). The problem persists. An output signal is being sent regardless of the button position. I think it might be the power supply. Gonna grab a 6v and see if it changes anything. How do you guys wire your P/S? Looking at getting a din rail outlet or a mini AC/DC converter from china.

 

[Nessie]

Changed out the power supply for 6V and it all works fine.