Heat stick questions (im sure im gonna get flamed for this but im confused) - Home Brew Forums
Register Now For Free!

 Home Brew Forums > Heat stick questions (im sure im gonna get flamed for this but im confused)

10-22-2010, 05:12 PM   #1
xjncoguyx
Recipes

Dec 2009
Philly
Posts: 326
Liked 18 Times on 15 Posts

Ok, got just a few questions about this. I've read through numerous DIY threads and i think im probably over thinking this. Ok, first im working with a 15A GFI, and i was going to build a 1500W heat stick to supplement my electric stove. Im assuming to use 14/3 wire on this application? Also i've noticed people doing calculations using 240v to get the actual wattage of the elements. If im buying a 110v 1500W element, is it going to be 1500W or do i need something bigger to achieve 1500W? Im very good at builiding things, im just having a hard time understanding all the calculations to get the actual wattage, as well as what type of wire is needed to run said heat stick.

10-22-2010, 05:30 PM   #2
CoalCracker

Recipes

Sep 2009
Macungie, Pa
Posts: 1,704
Liked 106 Times on 65 Posts

This should be posted in the electrical forum. You'll probably get more answers there. a 2000w element will get you 1389 watts. For this you would need a 20 amp circuit as it will be pulling 16.5 amps. 14g will be enough for 1500w. For 2000 i used 12/2 SJ cord.

10-22-2010, 05:34 PM   #3
Walker
I use secondaries. :p

Recipes

Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts

Quote:
 Originally Posted by xjncoguyx im working with a 15A GFI, and i was going to build a 1500W heat stick to supplement my electric stove. Im assuming to use 14/3 wire on this application?
I would check the amp rating of the cord. The insulation used on the wires and length of the cord have an impact on the amp rating. For in-wall house wiring, 14 gauge will handle 15A, but I've seen many 14/3 extension cords that claim only 13A rating.

Your 1500W element is going to draw about 13A, so... it should handle it, but you can always go bigger on the wire gauge to be safer.

Quote:
 Originally Posted by xjncoguyx Also i've noticed people doing calculations using 240v to get the actual wattage of the elements. If im buying a 110v 1500W element, is it going to be 1500W or do i need something bigger to achieve 1500W? Im very good at builiding things, im just having a hard time understanding all the calculations to get the actual wattage, as well as what type of wire is needed to run said heat stick.
If your element is sold as a 1500W/110V element, then it is going to produce 1500W when run with 110V.

Elements sold as <whatever>Watt/240V will produce <whatever> watts at 240V, but can also be run on 120V and will produce only 1/4 of the watts. So, 5500W/240V element running on 120V is effectively a 1375W element.

But... never run an element on 240V if it was meant/sold as one for 120V. It will produce 4 times the advertised watts and will almost certainly burn up.
__________________
Ground Fault Brewing Co.

10-22-2010, 05:35 PM   #4
Walker
I use secondaries. :p

Recipes

Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts

Quote:
 Originally Posted by CoalCracker a 2000w element will get you 1389 watts.
Huh? What do you mean a 2000W element will get you 1389W?
__________________
Ground Fault Brewing Co.

10-22-2010, 05:38 PM   #5
xjncoguyx
Recipes

Dec 2009
Philly
Posts: 326
Liked 18 Times on 15 Posts

Quote:
 Originally Posted by Walker I would check the amp rating of the cord. The insulation used on the wires and length of the cord have an impact on the amp rating. For in-wall house wiring, 14 gauge will handle 15A, but I've seen many 14/3 extension cords that claim only 13A rating. Your 1500W element is going to draw about 13A, so... it should handle it, but you can always go bigger on the wire gauge to be safer. If your element is sold as a 1500W/110V element, then it is going to produce 1500W when run with 110V. Elements sold as Watt/240V will produce watts at 240V, but can also be run on 120V and will produce only 1/4 of the watts. So, 5500W/240V element running on 120V is effectively a 1375W element. But... never run an element on 240V if it was meant/sold as one for 120V. It will produce 4 times the advertised watts and will almost certainly burn up.
Dude, you are awesome You just cleared up everything for me in one post.

10-22-2010, 05:50 PM   #6
curlyfat
Registered User
Recipes

May 2010
Wyoming
Posts: 4,396
Liked 37 Times on 36 Posts

If it's an element meant to run on 110v, then that's the wattage you'll get at 110v.

If you're needing to figure out your amps, here's a handy website with all the calculations you need:
http://www.the12volt.com/ohm/ohmslaw.asp

So, you'll be pulling 13.64 amps which is awfully close to your 15amp circuit...

EDIT: Man I'm a slow poster...

10-22-2010, 06:15 PM   #7
CoalCracker

Recipes

Sep 2009
Macungie, Pa
Posts: 1,704
Liked 106 Times on 65 Posts

Quote:
 Originally Posted by Walker Huh? What do you mean a 2000W element will get you 1389W?
That is the number that the electric brewing spreadsheet is giving me. I guess what they assume is that there is resistance in the current draw therefore reducing the usable amount of wattage from the element. When I type in a 2000w element it gives me that number. Everyone swears by that spreadsheet so I figured I'd get my numbers from it for this post.

Looking at it again. The spreadsheet had 100w in it as the actual voltage. Which IMO would be wrong (unless of course there is some kind of attenuation going on. My bad.

Reason: i'm a dummy...

10-22-2010, 06:24 PM   #8
Walker
I use secondaries. :p

Recipes

Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts

CoalCracker...

I'm with you now. If the element is sold as 2000W/120V and you run it on 100V, then you will indeed get 1389W of effective power from the element.
__________________
Ground Fault Brewing Co.

10-26-2010, 06:59 PM   #9
xjncoguyx
Recipes

Dec 2009
Philly
Posts: 326
Liked 18 Times on 15 Posts

Quote:
 Originally Posted by Walker CoalCracker... I'm with you now. If the element is sold as 2000W/120V and you run it on 100V, then you will indeed get 1389W of effective power from the element.
Aren't most outlets 120v?

10-26-2010, 07:30 PM   #10
DeafSmith

Recipes

Jan 2009
Richardson, TX
Posts: 1,448
Liked 34 Times on 32 Posts

Quote:
 Originally Posted by Walker CoalCracker... I'm with you now. If the element is sold as 2000W/120V and you run it on 100V, then you will indeed get 1389W of effective power from the element.

If you're running on 100 volts, you're either in Japan, or you're having one hell of a brownout.

progmac Likes This
 Thread Tools

 Similar Threads Thread Thread Starter Forum Replies Last Post Bugaboo General Beer Discussion 3 10-14-2010 03:46 PM steinsato General Beer Discussion 20 08-13-2010 09:53 PM snevey General Beer Discussion 6 04-24-2010 06:17 PM c.n.budz General Beer Discussion 61 06-23-2008 02:34 AM Reverend JC General Beer Discussion 15 08-22-2006 02:47 AM

 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Sponsor Showcase     Sponsor Showcase Home Brewing Beer     Beginners Beer Brewing Forum     General Beer Discussion     Fermentation & Yeast     All Grain & Partial Mash Brewing     BIAB Brewing     Extract Brewing     Gluten Free Brewing     General Techniques     Recipes/Ingredients     Equipment/Sanitation     Electric Brewing     Automated Brewing Forum     DIY Projects         Kegerators & Keezers         Brew Stands         Cleaners & Cleaning         Chillers & Stir Plates         Kettles, Mash Tuns & Hot Liquor Tanks         Fermenters     Bottling/Kegging     Label Display & Discussion     Brew Science     Lambic & Wild Brewing     Hops Growing     Home Brewing Photo Forum     Brewing Software Wine, Mead, Cider, Sake & Soda     Winemaking Forum     Mead Forum     Cider Forum     Soda Making     Kombucha & Fermented Tea Forum HomeBrewTalk.com Recipe Database     Homebrew Lager Recipes     Homebrew Ale Recipes     Homebrew Sours & Wilds Recipes     Specialty, Fruit, Historical, Other Homebrew Recipes     Mead Recipes     Wine Recipes     Cider Recipes Home Brew Market     Sampling and Critiquing and Beer Swapping     For Sale     Want to Buy     Group Buys     Homebrew Crowdfunding Food and Beverage     Cheese Making Forum     Cooking & Pairing     Coffee Brewing & Roasting     Meat Smoking, Curing and Sausage Making Home Brewing Community     General Chit Chat     Drunken Ramblings and Mindless Mumbling     Commercial Brew Discussion     Beer Blogs & Articles     Company Reviews Brewing Events & Local Gatherings     North West Homebrew Forum     South West Homebrew Forum     Great Lakes Homebrew Forum     South East Homebrew Forum     North East Homebrew Forum     North Central Homebrew Forum     South Central Homebrew Forum     International