ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
12 Lead Motor Connection Weird
by emolatur - 01/19/22 02:40 PM
Any women electricians here?
by gfretwell - 01/17/22 01:44 PM
Well There's your problem.
by gfretwell - 01/08/22 12:17 AM
Happy New Year!!
by HotLine1 - 01/04/22 09:50 AM
Sangamo s309.2
by Robski - 12/31/21 04:54 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 47 guests, and 11 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#111530 12/27/06 01:05 PM
Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
The following pic shows the power and control of the HVAC in a commercial establishment.

The cord & plug supplies a flying tangle of wire nuts; these supply a furnace, swamp cooler, and line voltage thermostat.


[Linked Image]

Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

#111531 12/27/06 08:38 PM
Joined: Apr 2002
Posts: 7,288
Likes: 4
Member
This northern city guy needs to know what a 'swamp cooler' is??

Even not knowing, it can't be wired even close to right!
John


John
#111532 12/27/06 08:51 PM
Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
A swamp cooler is used in dry areas for cooling. It has three main elements: a fan, a pump, and a screen. The fan blows dry air through the screen, while the pump keeps the screen wet. The water, as it evaporates, cools the air quite a bit.

How much it can cool the air depends entirely upon the relative humidity of the air. In that respect, a swamp cooler installation is different from air conditioning ... you need to have a constant flow of fresh air through the house. No closed windows here!

A swamp cooler typically will only draw a few amps.

#111533 12/29/06 06:40 AM
Joined: Dec 2000
Posts: 4,289
Member

#111534 12/29/06 08:30 AM
Joined: Nov 2006
Posts: 348
I
ITO Offline
Member
Swamp coolers work great in West Texas where it is dry.

They dont work at all in Central Texas.

Its all about the Humidity,


101° Rx = + /_\
#111535 12/29/06 09:11 AM
Joined: Sep 2005
Posts: 97
J
Member
We had an evaporative cooler in an office at work once. They had all the doors and windows open. It set the fire alarm off. When the Fire Brigade turned up, we went into the room and it was somewhat like a sauna, everything was wet, the ceiling, the fire detector. The Fire Brigade were quite bemused and slightly miffed. It lasted a few months in a larger office before it started producing an awful stench so it went in the bin.

I think it is too humid for them over here.

We got inverter A/C and I dont know how we ever coped before.


I took my time, I hurried up, The choice was mine, I didn't think enough
#111536 12/29/06 08:20 PM
Joined: Apr 2002
Posts: 7,288
Likes: 4
Member
Thank you, but that's not a 'Jersey thing'. We have to remove humidity; not add it.

Happy & Safe New Year to all.

John


John
#111537 12/30/06 11:13 AM
Joined: Feb 2004
Posts: 1,438
Member
My father-in-laws prehistoric house has one of these swamp things stuck into the side of it, with the squirrel cage blowing straight into the living room... He had it just plugged into an extension cord, which plugged into an old floor outlet, until I showed him the extension cord was melting [Linked Image] I hardwired a circuit in and fed a swamp control with 12/4 MC into the living room.

Amusingly, one day I went by there and turned it on to cool the house down, and this thing started blowing bubbles into the living room [Linked Image] [Linked Image] It did that for about a month and hasn't ever since

#111538 12/31/06 09:52 AM
Joined: Jul 2002
Posts: 8,412
Likes: 3
Member
Swamp Cooler is another name for an Evaporative cooler.
I remember working on them as an EC, you had to have a mask on while draining the water out.
Legionnaires disease is rife in any Evap cooler that is not well maintained, not to mention mosquitos laying eggs in them.
There was a local McDonalds was shut down because of a problem with an Evap unit here, water was like sludge when we cleaned it out.
It was in the Kiddie castle thingee.
One other reason why I won't eat there. [Linked Image]


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
RH1
RH1
California
Posts: 22
Joined: August 2009
Top Posters(30 Days)
NORCAL 3
grich 1
Popular Topics(Views)
288,000 Are you busy
220,122 Re: Forum
206,117 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5