First, I'd like to introduce myself.
Hi. I'm Mike. I brewed for awhile, then stopped. Now I'm back!
On to the questions! I read through all the electric brew kettle threads that I could find but did not see these addressed anywhere.
If it is true that:
A) A 5500W or 4500W element will cause a boilover on most kettles if it is not regulated.
B) You can run a 240V heating element at 120V and get half the heat output.
Than can you simply use a SPDT switch to switch the second 120V leg to neutral, resulting in a 120V circuit to the heating element?
My concerns with this are that there is no GCFI protection on the resulting 120V circuit and that I really don't know what I am talking about and might burn down the house and/or kill myself.
If, as in the case above, you are controlling one 120V leg of a 240V line with a 120V 20A SPDT switch, could you use a 120V 20A SPST switch on the other leg? What would happen if you energized the 120V / neutral SPDT switch without the other switch being on?
Is it necessary to have GCFI protection on a 240V line?
From what I understand, the PID / SSR combo does not really monitor the temperature. You set it to a ON/OFF ratio that keeps the kettle at the desired temperature, but you have to know the ratio beforehand. Is this correct? If so, how do you build a control on which you can just dial in the desired temperature?
Thanks. From what I have seen while lurking, the members of this forum are among the friendliest and most helpful that I have ever seen.