| [GMCnet] GMC Water Heater Elements [message #337847] |
Sat, 13 October 2018 19:18  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Having no experience with GMC water heaters, I'm dependent upon Y'All for
advice: Our 80 gallon home electric water heater developed a leak last
week. Before they hauled the hulk away, I removed the two heating elements
(3500W & 4000W, 240vac IIRC) and the two thermostats. I've read here that
such elements are good replacements for those in GMC heaters. If so, I'll
bring these to GMCMI Tallahassee as giveaways; otherwise they'll go into
the trash. Here's the link to a photo of them; they're obviously well
used, but were working perfectly:
What say ye?: Keep 'em or throw 'em?
Ken H.
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] GMC Water Heater Elements [message #337849 is a reply to message #337847] |
Sat, 13 October 2018 20:28  |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Ken, Keep them
The wattage is halved, running on 110, but they will last almost forever. I'm not sure about the thermostats. For free, it's buyers choice. LOL
Tom
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] GMC Water Heater Elements [message #337851 is a reply to message #337849] |
Sat, 13 October 2018 20:42 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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If you run a 240 Volt heater on 120, the wattage will be down to 1/4 of rated. Half the voltage will result in half the current as well. 1/2 x 1/2 = 1/4.
D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com
________________________________
From: Gmclist on behalf of Thomas Phipps
Sent: Saturday, October 13, 2018 20:28
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] GMC Water Heater Elements
Ken, Keep them
The wattage is halved, running on 110, but they will last almost forever. I'm not sure about the thermostats. For free, it's buyers choice. LOL
Tom
--
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] GMC Water Heater Elements [message #337852 is a reply to message #337851] |
Sat, 13 October 2018 21:05 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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I understand the electrical details. What I don't know is whether these
elements will fit into a GMC heater.
Ken H.
On Sat, Oct 13, 2018 at 9:43 PM D C _Mac_ Macdonald
wrote:
> If you run a 240 Volt heater on 120, the wattage will be down to 1/4 of
> rated. Half the voltage will result in half the current as well. 1/2 x
> 1/2 = 1/4.
>
> D C "Mac" Macdonald
> Amateur Radio K2GKK
> Since 30 November '53
> USAF and FAA, Retired
> Member GMCMI & Classics
> Oklahoma City, OK
> "The Money Pit"
> TZE166V101966
> '76 ex-Palm Beach
> k2gkk + hotmail dot com
>
> ________________________________
> From: Gmclist on behalf of Thomas
> Phipps
> Sent: Saturday, October 13, 2018 20:28
> To: gmclist@list.gmcnet.org
> Subject: Re: [GMCnet] GMC Water Heater Elements
>
> Ken, Keep them
> The wattage is halved, running on 110, but they will last almost forever.
> I'm not sure about the thermostats. For free, it's buyers choice. LOL
>
> Tom
> --
> 2012 Phoenix Cruiser model 2552
> KA4CSG
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] GMC Water Heater Elements [message #337899 is a reply to message #337852] |
Sun, 14 October 2018 21:05 |
cadelec
Messages: 303
Registered: September 2011
Location: Brisbane Australia
Karma: 1
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Senior Member |
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I think the gmc element is a 1 inch npt thread
Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
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| Re: [GMCnet] GMC Water Heater Elements [message #337901 is a reply to message #337899] |
Sun, 14 October 2018 22:33 |
JerryW
Messages: 256
Registered: August 2018
Karma: 1
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Senior Member |
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The original element (at least in my 1977 Kingsley) is a square flange mount with 4 bolts in the corners that bolt to a matching flange on the water heater. A gasket fits between the flanges.
More modern heating elements have screw threads. One can purchase an adapter flange which has a threaded section in the center. This makes it easier to change the element and allows the use of the modern elements. I bought the adapter at Home Depot many years ago.
Emery Stora
77 Kingsley
Frederick, CO
> On Oct 14, 2018, at 8:05 PM, Trevor Pordage wrote:
>
> I think the gmc element is a 1 inch npt thread
> --
> Trevor
> Brisbane Australia
> Siesta Koala 76 Edgemont (old Bobby Moores)
> 71 Cadillac Eldo Convert
> 58 Cadillac Eldorado Brougham Project
>
>
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