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Simple, Inexpensive Control #110462
04/20/06 07:01 PM
04/20/06 07:01 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,271
Fullerton, CA USA
The Laundry Room is open from 7AM until 10PM.
The timer on the top left automatically shuts off the washers, dryers, and lights. (The other 2 do nothing)


[Linked Image]


So, how do you turn off 13 circuits with just a 1 pole time clock and 1-3 pole contactor?

Simple... [Linked Image]


[Linked Image]

2017 / 2014 NEC & Related Books and Study Guides
Re: Simple, Inexpensive Control #110463
04/20/06 07:17 PM
04/20/06 07:17 PM
M
mahlere  Offline
Member
Joined: Nov 2005
Posts: 507
New Jersey
are they really using the "Big Blue Scotchlock Method"?

I thought that was only a theory. An urban legend that instructors would tell students.

Something like bigfoot or mermaids.

Re: Simple, Inexpensive Control #110464
04/20/06 09:32 PM
04/20/06 09:32 PM
M
mamills  Offline
Member
Joined: Nov 2001
Posts: 745
Wharton, Texas, USA
Bear with me...I'm having a little trouble trying to figure this one out.

Are they turning off the 13 circuits by interrupting the NEUTRAL with that little contactor [Linked Image]?

Mike (mamills)

Re: Simple, Inexpensive Control #110465
04/20/06 09:50 PM
04/20/06 09:50 PM
E
electricman2  Offline
Member
Joined: Nov 2003
Posts: 269
Thomasville, NC USA
Quote
Are they turning off the 13 circuits by interrupting the NEUTRAL with that little contactor ?


Sure looks that way to me. [Linked Image]


John
Re: Simple, Inexpensive Control #110466
04/20/06 10:35 PM
04/20/06 10:35 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,271
Fullerton, CA USA
Yup, they are.
The top pole is being used for the lighting circuit's hot.(the white wire that's so nicely taped black)
The other 2 poles each have a #10 to the neutral bar, and a #10 to the big blue wirenut where the homerun neutrals are spliced.

Re: Simple, Inexpensive Control #110467
04/20/06 10:56 PM
04/20/06 10:56 PM
L
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
Richmond, VA
So you can cheat as long as you use one washer on each phase and start them simultaneously!

No, that wouldn't work. Never mind.

[This message has been edited by Larry Fine (edited 04-20-2006).]


Larry Fine
Fine Electric Co.
fineelectricco.com
Re: Simple, Inexpensive Control #110468
04/21/06 08:10 AM
04/21/06 08:10 AM
F
FountainGuy  Offline
Member
Joined: Mar 2006
Posts: 30
Lawrenceville,GA, U.S.A
Since the two Tork timers aren't being used, there's plenty of room to add a panel with a bank of contactors and do it right. [Linked Image]

I would have never thought of breaking the neutrals to control anything. Some roads you just don't take, and this creative road is one of them. Someone has a wild imagination!

Re: Simple, Inexpensive Control #110469
04/21/06 10:10 AM
04/21/06 10:10 AM
M
mamills  Offline
Member
Joined: Nov 2001
Posts: 745
Wharton, Texas, USA
Larry: Should work, just don't get caught in the beginning of the rinse cycle at 10:01 p.m. [Linked Image]

(straying from the point...sorry).

Mike (mamills)

Re: Simple, Inexpensive Control #110470
04/21/06 01:42 PM
04/21/06 01:42 PM
K
kdal  Offline
Member
Joined: Sep 2005
Posts: 34
Florida,U.S.A.
[The timer on the top left automatically shuts off the washers, dryers, and lights.]

I can understand Lights.
But why would they want to shut off washers and dryers.
Are these Gas dryers?
And the 120v is just control?
If they are electric 240v and the ground and neutral are actually seperate at the unit.
Maybe they ran the neautrals through the contactor because there would be very little current on the neautrals.
Just controls and no heating elements.
"Important to do the math before you drop
those quarters."

Re: Simple, Inexpensive Control #110471
04/21/06 03:00 PM
04/21/06 03:00 PM
mxslick  Offline
Member
Joined: Oct 2004
Posts: 803
Atomic City, ID USA
I wonder how many washer/dryer motors they've burned up by doing this. I'll bet the service renting the machines to these clowns would love to know about this!!

And let's not overlook the panel full of lovely Zinsco tandems!!


Stupid should be painful.
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