How much power is available at the outlet? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Electric Brewing > How much power is available at the outlet?

Reply
 
Thread Tools
Old 10-22-2010, 02:09 AM   #1
SenorWanderer
Beer Maniac
HBT_LIFETIMESUPPORTER.png
 
SenorWanderer's Avatar
Recipes 
 
Aug 2007
Denver
Posts: 592
Liked 3 Times on 3 Posts



I just recently noticed a 240v 3 prong dryer outlet in my friends garage where I brew. It was hiding behind some scrap 2x4s. I've been planning a small HERMS upgrade to my HLT but was planning on using only a 120v element. Now that I've found this outlet my plans are changing for the better! Question is, how do I determine how much juice is available at the outlet? I'm not very experienced with electrical, but I understand the basics (120 v. 240, proper gauge wire for the amps, how to wire an outlet, how to ground a circuit, etc). I know that I could just go look at the panel, and I'll try that, but I'd like to know which type of metering tool I can pick up at home depot will tell me what I need to know.

Any suggestions, along with tips on how to use properly and safely, would be greatly appreciated!

 
Reply With Quote
Old 10-22-2010, 02:13 AM   #2
klyph
Recipes 
 
Dec 2009
North Pole, Alaska
Posts: 1,809
Liked 41 Times on 37 Posts


It will give you all the amperage it can until the breaker trips or the wire melts. Your power is limited by the breaker which should be sized to protect the wiring. I don't understand why you need to measure it. Just look at the breaker.
__________________
10 gallon electric system
Stovetop 110v single vessel 5 gallon system

Primary: saison
Secondary: nada
Conditioning: macaroon stout
Drinking: store bought

 
Reply With Quote
Old 10-22-2010, 02:34 AM   #3
Ohio-Ed
HBT_LIFETIMESUPPORTER.png
 
Ohio-Ed's Avatar
Recipes 
 
Nov 2008
Posts: 2,067
Liked 20 Times on 19 Posts


Measurement tools will measure how much current is being drawn (or used) at a point in time, but not how much "could be" used.

As Klyph said... the breaker size is the answer you are looking for.

 
Reply With Quote
Old 10-22-2010, 04:05 AM   #4
DeafSmith
HBT_LIFETIMESUPPORTER.png
 
DeafSmith's Avatar
Recipes 
 
Jan 2009
Richardson, TX
Posts: 1,448
Liked 34 Times on 32 Posts


If it's a dryer outlet, it's likely 30 amps. The plug configuration is one indicator (see if it is a NEMA 10-30, for example).
http://www.stayonline.com/reference-nema-straight-blade.aspx

But really, the only way to know is to look at the breaker - no metering tool needed.

 
Reply With Quote
Old 10-22-2010, 09:01 PM   #5
kal
HBT_SUPPORTER.png
 
kal's Avatar
Recipes 
 
Nov 2006
Ottawa, Canada
Posts: 2,513
Liked 347 Times on 224 Posts


I would also confirm that the wiring coming out of the breaker panel is indeed 10/3 with ground.

Kal

 
Reply With Quote
Old 10-22-2010, 09:20 PM   #6
Slider46
Recipes 
 
Aug 2010
Maryland, Maryland
Posts: 120

Really though you already know "how much power" you have.

~240v -> ~30amps -> ~7200 watts (All maximum values for the circuit)

If for some reason you feel the need to get a multi-meter be very sure you know what you're doing. Sticking probes in any outlet or main box without knowing what you're doing can be lethal.
__________________

Brewing:
Ready: Nothing - All Gone :(
Bottled/Aging: Cherry Wheat
Primary: Nothing
Up Next: Irish Red Ale | Almost Flying Dog Pale Ale

My Threads:
Newbie's Fermentation Chiller
Space-Saving "Brew Closet"

Spoke'n Beer Blog - Beer and Bikes


 
Reply With Quote
Old 10-22-2010, 10:37 PM   #7
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,193
Liked 1654 Times on 1069 Posts


I'll suggest a different route. First find out if there's a 2pole 30a breaker in the panel. Then find out if there's another electric dryer in the house, maybe in the basement, that is still in use. It's possible they just decided to move the dryer to another location and abandon the outlet in the garage. In that case, it may be disconnected at the panel.
__________________
Welcome to BrewHardware.com. I love you.
BIAB Large Mesh False Bottoms and SS HERMS COILS are IN!!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 10-24-2010, 03:30 PM   #8
jlag
Recipes 
 
Dec 2009
Natick, USA
Posts: 27

The dryer and the garage outlet could be wired to the same breaker too. In that case, no brewing on laundry day

 
Reply With Quote
Old 10-24-2010, 03:48 PM   #9
beninan
Recipes 
 
Mar 2010
Maine
Posts: 998
Liked 17 Times on 16 Posts


Quote:
Originally Posted by jlag View Post
The dryer and the garage outlet could be wired to the same breaker too. In that case, no brewing on laundry day
wrong! it's no laundry on brewing day

 
Reply With Quote
Old 02-08-2011, 04:57 AM   #10
petey_c
Senior Member
HBT_SUPPORTER.png
 
petey_c's Avatar
Recipes 
 
Jun 2010
Miller Place, NY (Long Island)
Posts: 1,344
Liked 89 Times on 76 Posts


I know it's been awhile for this, but just thought I'd add something; 30/40 gal. hot water heaters, small A/C condensors, and other things can also be run on 2P30A breakers.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Laundry Outlet? ZWood15 Electric Brewing 13 10-19-2010 04:53 AM


Forum Jump