Coldbreak Brewing HERMS Giveaway!

HomeBrewSupply AMCYL Brew Kettle Giveaway!


Home Brew Forums > Home Brewing Beer > Electric Brewing > ebay 3800w dimmer
Reply
 
Thread Tools
Old 07-24-2012, 07:46 PM   #1
rod734
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Jasonville, IN
Posts: 197
Liked 1 Times on 1 Posts
Likes Given: 2

Default ebay 3800w dimmer

I wonder if one of these would work for an element controller I hope the link works

http://www.ebay.com/itm/New-3800W-0-...#ht_2525wt_942


__________________
I really need spellchecker, I can't spell schet, that's why I only got a B in med-terminology
rod734 is offline
 
Reply With Quote
Old 07-24-2012, 08:28 PM   #2
Squeeky
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2005
Location: Dayton, Ohio
Posts: 513
Liked 18 Times on 15 Posts
Likes Given: 3

Default

Yeppers it's a simple PWM


Squeeky is offline
 
Reply With Quote
Old 07-25-2012, 07:04 AM   #3
Protto
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2011
Location: Vangsnes, Norway
Posts: 36
Liked 3 Times on 3 Posts
Likes Given: 2

Default

Not PWM but phase angle. Same as any simple light dimmer for halogen or glowlamp, but with more power.

In theory you could experience some RF-noise with phase angle, but I wouldnt worry to much about it.
Protto is offline
 
Reply With Quote
Old 07-25-2012, 12:05 PM   #4
lunchbox
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2009
Location: North Carolina
Posts: 434
Liked 10 Times on 9 Posts
Likes Given: 1

Default

Will there be any issues running a 5500w element on a 3800w dimmer?
__________________
Resident Minarchist
lunchbox is offline
 
Reply With Quote
Old 07-25-2012, 03:29 PM   #5
mendesm
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
mendesm's Avatar
Recipes 
 
Join Date: May 2012
Location: Bedford, Massachusetts
Posts: 308
Liked 42 Times on 27 Posts
Likes Given: 63

Default

99.999999% chance there will be problems, of the smoky/sparky/fiery kind. The dimmer can source up to 3800 watts and the 5500 watts element wants to drain an additional 1700 watts above that.
mendesm is offline
 
Reply With Quote
Old 07-25-2012, 04:03 PM   #6
wilserbrewer
BIAB Expert Tailor
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 10 reviews
 
wilserbrewer's Avatar
Recipes 
 
Join Date: May 2007
Location: Jersey Shore, Jersey
Posts: 8,181
Liked 823 Times on 657 Posts
Likes Given: 15

Default

Could this be used to control 2000w at 120v?
Thanks,
wilserbrewer is online now
 
Reply With Quote
Old 07-25-2012, 04:20 PM   #7
mendesm
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
mendesm's Avatar
Recipes 
 
Join Date: May 2012
Location: Bedford, Massachusetts
Posts: 308
Liked 42 Times on 27 Posts
Likes Given: 63

Default

It should work with 120v and a 2000w element.

EDIT: looking at the pictured item again, it has only 2 screw connectors, one for the input, the other for the output, so it looks like this has to be connected in series with the load on the neutral wire. It's the only way I see this working with a 220v setup, which normally has 2 hots and 1 neutral and I don't like that. In a 110v set up, you can connect it between the on/off switch and the load in the hot wire.
mendesm is offline
 
Reply With Quote
Old 07-25-2012, 04:37 PM   #8
lunchbox
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2009
Location: North Carolina
Posts: 434
Liked 10 Times on 9 Posts
Likes Given: 1

Default

Is it a good idea to get a dimmer that can handle more than the element is rated for, or is it OK to match them up equally?
__________________
Resident Minarchist
lunchbox is offline
 
Reply With Quote
Old 07-25-2012, 04:44 PM   #9
mendesm
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
mendesm's Avatar
Recipes 
 
Join Date: May 2012
Location: Bedford, Massachusetts
Posts: 308
Liked 42 Times on 27 Posts
Likes Given: 63

Default

Quote:
Originally Posted by lunchbox View Post
Is it a good idea to get a dimmer that can handle more than the element is rated for, or is it OK to match them up equally?
Yes, it is a good idea to get one that can source more (current, and therefore higher wattage) than the load drains. But be aware that you should always match the voltage.

After taking a look at the listing and what it is, it's OK even though it is meant to work with 220v. But that is NOT always the case with these things.
mendesm is offline
 
Reply With Quote
Old 07-25-2012, 07:04 PM   #10
wilserbrewer
BIAB Expert Tailor
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 10 reviews
 
wilserbrewer's Avatar
Recipes 
 
Join Date: May 2007
Location: Jersey Shore, Jersey
Posts: 8,181
Liked 823 Times on 657 Posts
Likes Given: 15

Default

Quote:
Originally Posted by mendesm View Post
99.999999% chance there will be problems, of the smoky/sparky/fiery kind. The dimmer can source up to 3800 watts and the 5500 watts element wants to drain an additional 1700 watts above that.
While I agree it is not good practice to run things beyond their rated potential, why do you percieve nearly 100% chance of failure? These things must be slightly overdesigned, no?

How about 4500w?

Sorry for the noobish question, is something like this ready to use, or are more components needed to control an element...


wilserbrewer is online now
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ebay PID lzrdkng14 Electric Brewing 10 02-24-2012 02:46 PM
Ebay SSR runs4beer Electric Brewing 50 02-16-2012 02:31 AM
Any reason why an electric dimmer would NOT work? ahave Electric Brewing 5 10-27-2011 08:08 PM
Ebay RTD smellysell Electric Brewing 10 07-06-2011 09:40 PM
Ebay PID... is it ok? kklowell Electric Brewing 4 11-13-2010 02:03 AM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS