So, I reverse engineered the controller, found a main feed cap that didn't
have enough capacitance to power the controller, replaced that, then found
the op amp was goofy, replaced that (it was actually in a socket).
Installed everything, hot water. Very happy. In the process while wiring
up the triacs to the heating elements, got in a hurry and did it without
powering it down.
First time in my life that I blew a circuit breaker from the current that
went through my hand! I presume the circuit breaker is more sensitive to
currents to ground but I am pretty sure my hand did not conduct 20 amps.
-----Original Message-----
From: Seth Mattinen
Sent: Tuesday, December 4, 2018 9:09 PM
To: [email protected]
Subject: Re: [AFMUG] OT Linear Circuit
On 12/4/18 8:03 PM, [email protected] wrote:
It is 18 kW. Two runs of some pretty large wire. Maybe #8.
Perhaps a pair of 40 amp circuits I think.
Yeah that's like 80 amps at 240V. 8 AWG would be correct for 40 amp
circuits.
--
AF mailing list
[email protected]
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
--
AF mailing list
[email protected]
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
