Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-27-2012, 11:42 AM   #1
Newbie
 
Join Date: Mar 2012
Posts: 1
Rewards Points: 0
Share |
Default

Hook-up 2 Kilns


I intend to hook both Kilns (44 amp, 22 amp) up myself. I plan on installing a 100 amp subpanel ~40' from the main circuit panel and ~10' from the kilns to handle both kilns and additional switches/ receptacles. I'm planning on installing 100 amp breaker in the main and use 3AWG to feed the subpanel. I also plan to install dedicated fusible disconnects between the sub-panel and each kiln. Is 6 AWG 60c adequate for the install of the 44 amp kiln (w/ 50 amp breaker) or should I move up to a 60 amp breaker and the same for the disconnect and 4 AWG for that Kiln?

Similarly, for the 22 amp kiln, is 30 amp breaker and 10 AWG adequate? If I used a 40 amp breaker and 40 amp disconnect, does that create the possibility of an overheating hazard with the kiln, since it would permit current to keep flowing in case of a problem with the kiln up to the larger amperage draw?

I would like opinions on the best/ safest way to install these hookups? Is a larger breaker and greater capacity wire a good thing in the case of kilns (since you minimize the risk of a shut-off during a firing, or do I want to size it closer to the amp rating of the kiln (+ 25% buffer)?

Thanks

taflaherty is offline   Reply With Quote
Old 03-27-2012, 12:23 PM   #2
MarginallyQualified
 
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,663
Rewards Points: 0
Default

Hook-up 2 Kilns


Quote:
Originally Posted by taflaherty View Post
I intend to hook both Kilns (44 amp, 22 amp) up myself.
I plan on installing a 100 amp subpanel...
I would like opinions on the best/ safest way to install these hookups?
Each kiln needs it's own circuit with correct sized wire and matching plug/receptacle (or disconnect).
Each of those (2) circuits can be run from the existing panel using the correct sized breaker there.
----
If for some reason you instead want to install a sub panel somewhere closer to the kilns...then do that.

A 100 Amp sub panel fed from the main panel is fairly common project.
Use the correct sized wire and be sure to pull a ground as well as the neutral and (two) hots.

TarheelTerp is offline   Reply With Quote
Old 03-27-2012, 03:31 PM   #3
Semi-Pro Electro-Geek
 
Join Date: Jul 2009
Location: Arizona, USA
Posts: 2,550
Rewards Points: 0
Default

Hook-up 2 Kilns


Quote:
Originally Posted by taflaherty View Post
I intend to hook both Kilns (44 amp, 22 amp) up myself. I plan on installing a 100 amp subpanel ~40' from the main circuit panel and ~10' from the kilns to handle both kilns and additional switches/ receptacles. I'm planning on installing 100 amp breaker in the main and use 3AWG to feed the subpanel. I also plan to install dedicated fusible disconnects between the sub-panel and each kiln. Is 6 AWG 60c adequate for the install of the 44 amp kiln (w/ 50 amp breaker) or should I move up to a 60 amp breaker and the same for the disconnect and 4 AWG for that Kiln?

Similarly, for the 22 amp kiln, is 30 amp breaker and 10 AWG adequate? If I used a 40 amp breaker and 40 amp disconnect, does that create the possibility of an overheating hazard with the kiln, since it would permit current to keep flowing in case of a problem with the kiln up to the larger amperage draw?

I would like opinions on the best/ safest way to install these hookups? Is a larger breaker and greater capacity wire a good thing in the case of kilns (since you minimize the risk of a shut-off during a firing, or do I want to size it closer to the amp rating of the kiln (+ 25% buffer)?

Thanks
The overcurrent protection for each kiln should be the first standard rating that is larger than the 1.25 times the kiln's current rating. For the 44A kiln, that's 60A. For the 22A, it's 30A. There's no need for fusible disconnects if the kiln's are right near the subpanel.
mpoulton is offline   Reply With Quote
Old 03-27-2012, 03:52 PM   #4
Licensed Electrician
 
k_buz's Avatar
 
Join Date: Mar 2012
Location: SE Wisconsin
Posts: 4,340
Rewards Points: 0
Default

Hook-up 2 Kilns


Quote:
Originally Posted by taflaherty View Post
I intend to hook both Kilns (44 amp, 22 amp) up myself. I plan on installing a 100 amp subpanel ~40' from the main circuit panel and ~10' from the kilns to handle both kilns and additional switches/ receptacles. I'm planning on installing 100 amp breaker in the main and use 3AWG to feed the subpanel. #3 THHN (COPPER)

I also plan to install dedicated fusible disconnects between the sub-panel and each kiln. IF THE BREAKERS ARE WITHIN SIGHT OF THE KILN, DISCONNECTS ARE NOT NEEDED, THE BREAKERS WOULD BE YOUR DISCONNECT. BETWEEN FUSES AND THE DISCONNECTS, YOU WILL SAVE A CONSIDERABLE AMOUNT OF MONEY.

Is 6 AWG 60c adequate for the install of the 44 amp kiln (w/ 50 amp breaker) or should I move up to a 60 amp breaker and the same for the disconnect and 4 AWG for that Kiln? #6 THHN (COPPER) ON A 2 POLE 60A BREAKER

Similarly, for the 22 amp kiln, is 30 amp breaker and 10 AWG adequate? If I used a 40 amp breaker and 40 amp disconnect, does that create the possibility of an overheating hazard with the kiln, since it would permit current to keep flowing in case of a problem with the kiln up to the larger amperage draw? #10 THHN (COPPER) ON A 2 POLE 30A BREAKER

I would like opinions on the best/ safest way to install these hookups? Is a larger breaker and greater capacity wire a good thing in the case of kilns (since you minimize the risk of a shut-off during a firing, or do I want to size it closer to the amp rating of the kiln (+ 25% buffer)?

Thanks
Answers in red
k_buz is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hook on hollow door pyper Carpentry 16 01-19-2012 03:38 PM
Steam Boiler/ Baseboard hook up in basement helpless handyman HVAC 10 11-09-2011 07:16 AM
Capacitor hook up seeyah Electrical 3 12-25-2010 03:31 PM
Andersen Door Hook Latch Problem magic1whiz General DIY Discussions 1 12-09-2009 06:03 AM
3 ph compressor hook up psgstl Electrical 16 06-12-2009 08:37 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.