GFCI question - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Electric Brewing > GFCI question

Reply
 
Thread Tools
Old 06-10-2011, 09:34 AM   #1
Nail
Recipes 
 
Mar 2011
Mishawaka, Indiana
Posts: 50
Liked 5 Times on 3 Posts



I posted originally about the Leviton GFCI. I have since received mine and beginning to wire my control panel. Originally I was going to wire the GFCI so it cut power to the entire panel if it tripped. However, since then I am thinking of only cutting power to the heater element. This way I can maintain power to my PID and timer. I am using a plastic NEMA enclosure so I am not worried about the box being charged and was thinking if the GFCI only cut power to the element I could set a low alarm at say 200F to know if the element was shorted. Otherwise if wired to the incoming 240v everything goes dead if the GFCI is tripped. Thoughts?
__________________
Neil

Primary: Hefeweizen
Kegged: Gumballhead Clone

Just getting set up to do All-Grain and kegging.

 
Reply With Quote
Old 06-10-2011, 11:30 AM   #2
TrainSafe
Recipes 
 
Mar 2011
Appleton, WI
Posts: 812
Liked 68 Times on 46 Posts


You raise a great question. Keep in mind that the only time your GFCI will be used is when there is a failure somewhere else. That failure could be worn out wiring, damage (potential causes include heat & pinching), defective equipment, or installer error. Run through all the possibilities and combinations of possibilities.

If you have any other conducting path out of your control box you need to protect all of it with the gfci.

One example: what if a terminal screw loosened and a live wire fell off inside your box? What could it touch? Do you have a thermocouple that could carry line voltage to your kettle?

 
Reply With Quote
Old 06-10-2011, 12:25 PM   #3
Nail
Recipes 
 
Mar 2011
Mishawaka, Indiana
Posts: 50
Liked 5 Times on 3 Posts


That would be the only way of the box. I was thinking that a situation like that would trip the breaker though, wouldn't it? Guess I didn't say anything about that, but the panel is being hooked up to a dedicated 30amp breaker in my fuse panel. From what I have read about GFCI's, they do not detect shorts but rather only imbalances caused by current leakage. Am I wrong on this?
__________________
Neil

Primary: Hefeweizen
Kegged: Gumballhead Clone

Just getting set up to do All-Grain and kegging.

 
Reply With Quote
Old 06-10-2011, 12:28 PM   #4
wyzazz
Recipes 
 
Aug 2009
Atwater, OH
Posts: 4,312
Liked 55 Times on 52 Posts


I'd prefer that my possibly wet hands don't short anything out in my control panel, or worse shock the bejezzus out of myself. I'll be putting my GFCI before the control panel so that everything that could possibly get wet is protected.

Do what you wish, but keep in mind that putting the GFCI in after the CP gives you a bit of risk. If you are comfortable with that then go for it, but I wouldn't recommend it.
__________________
Quote:
Originally Posted by Revvy View Post
And I'd like to see my 1.080 beers ready from grain to glass in a week, and served to me by red-headed twin penthouse pets wearing garter belts and fishnet stockings, with Irish accents, calling me "master luv gun," but we can't always get what we want can we? :)

 
Reply With Quote
Old 06-10-2011, 02:02 PM   #5
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
 
Walker's Avatar
Recipes 
 
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts


If there was a ground fault, then it means you have a fairly serious problem to deal with and fix. Why do you care if the PID and timer stay on? You are going to have to unplug the system and repair it anyway.
__________________
Ground Fault Brewing Co.

 
Reply With Quote
Old 06-10-2011, 04:09 PM   #6
EarthBound
Recipes 
 
Mar 2010
Beer Capital of the World
Posts: 1,069
Liked 12 Times on 11 Posts


I agree with wyzazz that you should put your GFCI breaker before the control panel. I know that you've been bit before and survived, but that doesn't mean you can't die from another bite.

I know this is off topic, but I just wanted to say that I am so glad to see that the troll is not posting in this forum anymore. I was actually starting to get a little annoyed by him.
__________________
"You can do anything you set your mind to when you have vision, determination, and an endless supply of beer."

 
Reply With Quote
Old 06-10-2011, 04:21 PM   #7
samc
Recipes 
 
Aug 2008
Portland OR
Posts: 5,387
Liked 62 Times on 58 Posts


Hey everyone I am being electrocuted but I still know how much time is left on my boil !!

Seriously protect all !

 
Reply With Quote
Old 06-10-2011, 05:54 PM   #8
Nail
Recipes 
 
Mar 2011
Mishawaka, Indiana
Posts: 50
Liked 5 Times on 3 Posts


Well the point was to have an alarm to know something was wrong but now that I think about it the alarm would be switched to the timer during the boil. doh!! Thanks guys.
__________________
Neil

Primary: Hefeweizen
Kegged: Gumballhead Clone

Just getting set up to do All-Grain and kegging.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
GFCI and etc. aperk Electric Brewing 8 06-05-2011 11:39 PM
Gfci? rod734 Electric Brewing 9 04-26-2011 04:48 PM
3 wire 240v GFCI question thelorax121 Electric Brewing 25 03-30-2011 02:31 AM
Is this the right kind of GFCI? wh4tig0t Electric Brewing 11 03-24-2011 11:03 PM
Multiple GFCI wiring question Cpt_Kirks Electric Brewing 8 10-20-2010 03:22 PM


Forum Jump