Coldbreak Brewing Giveaway - Winners Drawn!

Home Brew Forums > Home Brewing Beer > Electric Brewing > Heating Elements Tripping GFCI, Now they're working?
Reply
 
Thread Tools
Old 09-23-2011, 03:46 AM   #1
BiscuitPower
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: EUG, Oregon
Posts: 10
Default Heating Elements Tripping GFCI, Now they're working?

Kinda like the title says. The details? First time brewing in the keggle with two 2kw elements. Was brewing an imperial porter BIAB. Both worked fine up until the mash, then the first one trips it's 20amp GFCI, nothing else on the circuit, in about 20min into the mash. Waited 30min, reset the outlet, plugged the element in, and it tripped in 'bout 5min. Ok, figured thats it for that one. Then about 50min later the other one trips on it's separate 20amp circuit. Neither element would plug in without tripping. Ended up doing the hop additions in a separate kettle on the stove with some drained wort. Looked at the elements while cleaning and there was probably a good 1/8" of crud baked on there. Otherwise, it flaked right off. Figured both elements were toast. Ordered a couple of low watt density elements, and just for kicks filled up the keggle half way and plugged 'em both in. Sure enough, both worked like a charm and brought the water to boil in no time flat!

Any thought as to what's going on here???

I'd like to use them to brew again if I could, but I'm still a bit concerned.

Thanks for the help in advance.


BiscuitPower is offline
 
Reply With Quote
Old 09-23-2011, 12:25 PM   #2
mabrungard
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
mabrungard's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Carmel, IN
Posts: 3,308
Liked 327 Times on 272 Posts
Likes Given: 30

Default

You didn't mention what voltage you're running those 2000w elements at. I'm assuming that you're running it on 240v, so the amperage should be well within the 80% limit for the 20a breaker. If its run on 120v, then the current draw will be over the 80% limit for continuous use (20a x 0.8 = 16a).

I don't know what else it could be.


__________________
Martin B
Carmel, IN
BJCP National
Foam Blowers of Indiana (FBI)

Brewing Water Information at:
https://sites.google.com/site/brunwater/

Like Bru'n Water on Facebook for occasional discussions on brewing water and Bru'n Water
https://www.facebook.com/pages/Brun-...?ref=bookmarks
mabrungard is online now
 
Reply With Quote
Old 09-23-2011, 12:37 PM   #3
P-J
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Charlotte, NC
Posts: 3,335
Liked 292 Times on 229 Posts
Likes Given: 495

Default

How did you mount the elements to the kettle? Also, how did you insulate the power connections?

My thinking (depending on your answers) is that you potted the connections within epoxy inside of a PVC cover. If you had any leakage through the kettle connection, a small amount of water within your electrical connections could give the results you are experiencing.
P-J is offline
 
Reply With Quote
Old 09-23-2011, 01:22 PM   #4
wyzazz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Atwater, OH
Posts: 4,289
Liked 48 Times on 45 Posts
Likes Given: 79

Default

Quote:
Originally Posted by P-J View Post
How did you mount the elements to the kettle? Also, how did you insulate the power connections?

My thinking (depending on your answers) is that you potted the connections within epoxy inside of a PVC cover. If you had any leakage through the kettle connection, a small amount of water within your electrical connections could give the results you are experiencing.
+1
__________________
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? :)
wyzazz is offline
 
Reply With Quote
Old 09-23-2011, 11:15 PM   #5
BiscuitPower
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: EUG, Oregon
Posts: 10
Default

Hey guys, thanks for the replies. Sorry I didn't mention the voltage. It's 120v. So, like 16.6 amps? That's 83% v 80%. Do you really think that would do it? (Honestly asking- not trying to be a smarty).

P-J and wyzazz, Thanks for the input. I thought of that at the time and I don't think (didn't see any) that there was water on the connections. Though, I wouldn't count it out. I actually used some old bike tire inner tubes, tightly wrapped concentrically from the wire to the bulkhead- not as ghetto as it sounds, promise. I unraveled the tubing afterwards and everything appeared bone dry. Meh.

I guess I'll give it another shot and report back. Thanks again everybody!
BiscuitPower is offline
 
Reply With Quote
Old 09-23-2011, 11:57 PM   #6
P-J
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Charlotte, NC
Posts: 3,335
Liked 292 Times on 229 Posts
Likes Given: 495

Default

Quote:
Originally Posted by BiscuitPower View Post
Hey guys, thanks for the replies. Sorry I didn't mention the voltage. It's 120v. So, like 16.6 amps? That's 83% v 80%. Do you really think that would do it? (Honestly asking- not trying to be a smarty).
...
Just a little point. The 80% "rule" does not apply to the home owner. Not even in your wildest imagination does it apply. That "rule" is part of the NEC code that applies to the architect, builder, building inspector - et.al. - not to the home owner. (How would the average home owner ever have a clue about it?) It also applies only to multi drop circuits. Never to a line feeding a single outlet. Never to the home owner as well.

Do not sweat it. It is not part of the problem.
P-J is offline
 
Reply With Quote
Old 09-24-2011, 02:07 AM   #7
Cimerian
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2011
Location: Hillsboro, TN
Posts: 282
Liked 1 Times on 1 Posts
Likes Given: 2

Default

I don't do electric brewing but I do do a lot of electrical stuff. What you described is from to much heat build up in the wiring etc. As heat increases resistance decreases causing amps to increase etc etc. Basically if say your wiring run to the outlet was to small of a gauge it would do this. If your heater elements are getting to hot because of not enough water to remove the heat from them. I'm thinking of this in a water heater sort of way but maybe you have to much heater for the amount of water you can hold in there?


Cimerian is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
looking for clarification on heating elements for RIMS kegtoe Electric Brewing 8 10-24-2011 04:45 PM
Holes for heating elements? lonepalm Electric Brewing 5 07-31-2011 09:22 PM
Question on heating elements ddknight Electric Brewing 0 07-06-2011 04:09 AM
Manual vs electronically controlled heating elements TonySwank Electric Brewing 56 06-24-2011 02:37 PM
Those using JB Weld to mount heating elements . . . Squeeky Electric Brewing 8 02-12-2011 11:08 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS