Simple question regarding a switch - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Electric Brewing > Simple question regarding a switch

Reply
 
Thread Tools
Old 07-10-2012, 12:05 AM   #1
nealperkins
HBT_LIFETIMESUPPORTER.png
 
nealperkins's Avatar
Recipes 
 
Oct 2007
Boone, NC
Posts: 312
Liked 13 Times on 11 Posts



well, for you guys it is. To say I'm not electrical is an over statement...

I want to 'insert' an off/on switch before an existing outlet. [Just so you know, it is to toggle a March pump.]

I think I understand that I want to actually insert the switch on the hot leg leaving the common in place??? Or, does it matter if I connect (insert the toggle switch to either side?

So, which is the hot leg? Does it normally connect to the 'larger' side of the three-prong? Or, do I need to connect the electronic device and plug in a multimeter to get (what?) reading to be sure I'm inserting my toggle switch on the correct leg?

Thanks for your help!

 
Reply With Quote
Old 07-10-2012, 02:25 AM   #2
Rbeckett
Recipes 
 
Dec 2011
Bronson, Fl
Posts: 995
Liked 70 Times on 49 Posts


Normal house wiring is Black for hot, white for neutral and green or green with a stripe for earth ground. You should use the hot side for your switch and use an SSR or relay to insure you have an adequate amount of amps and volts available. Most househols outlets are on a 15 Amp circuit, so keep that in mind when you start adding more stuff to your system. Hope this helps get ya going. Feel free to ask for help if you need more.
Wheelchair Bob
__________________
What do you mean "no Kidneys"???, WTF now I gotta drink less beer...
Join the Automation sub forum in Electric brewing for a discussion of components and control systems. I did!!!!

 
Reply With Quote
Old 07-10-2012, 10:39 AM   #3
nealperkins
HBT_LIFETIMESUPPORTER.png
 
nealperkins's Avatar
Recipes 
 
Oct 2007
Boone, NC
Posts: 312
Liked 13 Times on 11 Posts


I should have made clear that the outlet is on a control box and inside both common and hot are white.

So, if I plug in this controller and measure the outlet via multimeter, what readings insure hot...positive or negative voltage?

Also, does it matter if I switch common vs. hot?

 
Reply With Quote
Old 07-10-2012, 11:35 AM   #4
wubears71
HBT_LIFETIMESUPPORTER.png
 
wubears71's Avatar
Recipes 
 
Dec 2011
Webster Groves, MO
Posts: 372
Liked 30 Times on 18 Posts


Always switch hot.

 
Reply With Quote
Old 07-10-2012, 11:46 AM   #5
ChuckO
HBT_LIFETIMESUPPORTER.png
 
ChuckO's Avatar
Recipes 
 
Oct 2008
Keyrock, WV
Posts: 1,022
Liked 144 Times on 103 Posts


As above, always switch the hot lead. On a cord, the hot lead is the narrower of the two flat leads, the ground is the round lead. With both leads the same color, use an ohm meter to find the hot lead of an un-plugged cord.

 
Reply With Quote
Old 07-10-2012, 01:55 PM   #6
nealperkins
HBT_LIFETIMESUPPORTER.png
 
nealperkins's Avatar
Recipes 
 
Oct 2007
Boone, NC
Posts: 312
Liked 13 Times on 11 Posts


Thanks!

 
Reply With Quote
Old 07-10-2012, 02:26 PM   #7
Budzu
Recipes 
 
Mar 2009
Chattanooga, TN
Posts: 747
Liked 17 Times on 16 Posts


If trying to find which is the hot leg, the multimeter will read 120 volts between the hot and neutral, AND the hot and ground. neutral and ground will not read voltage.
__________________
Countertop Brutus Budzu-style

 
Reply With Quote
Old 07-10-2012, 03:23 PM   #8
nealperkins
HBT_LIFETIMESUPPORTER.png
 
nealperkins's Avatar
Recipes 
 
Oct 2007
Boone, NC
Posts: 312
Liked 13 Times on 11 Posts


Perfect! Thanks

 
Reply With Quote
Old 07-14-2012, 04:51 AM   #9
mkultra69
Recipes 
 
Dec 2007
Port Orchard WA
Posts: 97

On a receptacle the brass colored screw is the "hot" and the silver is the neutral. And as was said always switch the hot.
__________________
Live better buy union

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
hoa switch wiring question wncbrewer Electric Brewing 0 07-07-2012 04:47 PM
How do I do this?..."simple switch controled burners" mikelikesit2000 Electric Brewing 8 07-21-2011 12:25 PM
Heating Element Switch Question JrZyBud Electric Brewing 9 05-19-2011 06:24 PM
power switch question doulovebeef Electric Brewing 6 01-06-2011 02:32 AM
Simple switch question wilceaser Electric Brewing 2 11-18-2010 05:22 PM


Forum Jump