| [GMCnet] Restoration. Induction cook top. [message #291011] |
Thu, 26 November 2015 10:10  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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Hi Rob,
The issue is not the inverter or the batteries, it is the microwave. The microwaves that use an internal inverter like most of the Panasonic counter top units do not play well with your coach inverter power as they will draw a lot (more than name plate) of power on start up and then gradually drop to name plate power draw after being on for a while. So, it will not make any difference whether you have two or four six volt batteries.
I have four six volt batteries in the Royale and a very high quality, high output inverter. No matter what I did I could not get that setup to power a Panasonic "inverter" microwave. It even stumped the inverter supplier until he could get,through to Panasonic engineering who confirmed that their units would not normally work running off of inverted 120vac power supplied from a 12vdc source.
That same set up works just fine powering the Sharpe microwave in the Clasco or the Samsung microwave I purchased to replace that Panasonic unit in the Royale. The inverter in the Clasco is smaller and not of the same quality as the one in the Royale and even running off of a single 4d 12vdc AGM battery it powers the Sharpe microwave just fine.
My experience, anyway.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] Restoration. Induction cook top. [message #291021 is a reply to message #291011] |
Thu, 26 November 2015 16:49  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Jerry,
This is the microwave that is in Double Trouble:
http://www.sharpusa.com/ForHome/HomeAppliances/Microwaves/Archives/R820JS.aspx
As far as I can tell this is not an inverter microwave.
Regards,
Rob M.
The Pedantic Mechanic
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Gerald Work
Sent: Friday, November 27, 2015 3:10 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Restoration. Induction cook top.
Hi Rob,
The issue is not the inverter or the batteries, it is the microwave. The microwaves that use an internal inverter like most of the
Panasonic counter top units do not play well with your coach inverter power as they will draw a lot (more than name plate) of power
on start up and then gradually drop to name plate power draw after being on for a while. So, it will not make any difference
whether you have two or four six volt batteries.
I have four six volt batteries in the Royale and a very high quality, high output inverter. No matter what I did I could not get
that setup to power a Panasonic "inverter" microwave. It even stumped the inverter supplier until he could get,through to Panasonic
engineering who confirmed that their units would not normally work running off of inverted 120vac power supplied from a 12vdc
source.
That same set up works just fine powering the Sharpe microwave in the Clasco or the Samsung microwave I purchased to replace that
Panasonic unit in the Royale. The inverter in the Clasco is smaller and not of the same quality as the one in the Royale and even
running off of a single 4d 12vdc AGM battery it powers the Sharpe microwave just fine.
My experience, anyway.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Restoration. Induction cook top. [message #291023 is a reply to message #291011] |
Thu, 26 November 2015 17:52 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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If the 12 - 120 inverter provides a true sine wave, and has the capacity of the microwave startup draw, it should power the microwave just fine... the microwave doesn't know what sends it the 120v sine wave. If, however, the inverter is a squarewave or modified squarewave (step-sine) it probably isn't going to do well. If the inverter can't supply 120 at whatever amperage the microwave wants to start up, it ain't gonna work.
Be prepared for more and more electronic equipment to use switching power supplies - they are much cheaper to make than a transformer system. My washing machine (Lucky Goldstar) uses a switching supply and a DC motor and controls. I don't know if the steam generator is straight off the AC line or off the supply.
Switching supplies do >not< like squarewave power.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Restoration. Induction cook top. [message #291024 is a reply to message #291023] |
Thu, 26 November 2015 18:33 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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Which is the reason for the sine wave Xantrex.
Rob, look for a bad ground or V+ on the Xantrex. I have no problem starting just about anything through the Xantrex. After the install, I tested mine with a pair of resistive space heaters that draw 1kw each on a low setting. It ran just fine for 20 minutes. You can check the current draw and voltage on the Xantrex remote.
Dolph Santorine
DE N8JPC
Wheeling, West Virginia
1977 ex-Palm Beach TZE167V100820
1-ton, Sullybuilt Bags, Reaction Arms, 3.70 LSD, Manny Transmission, EV-6010,
> On Nov 26, 2015, at 6:52 PM, Johnny Bridges wrote:
>
> If the 12 - 120 inverter provides a true sine wave, and has the capacity of the microwave startup draw, it should power the microwave just fine... the
> microwave doesn't know what sends it the 120v sine wave. If, however, the inverter is a squarewave or modified squarewave (step-sine) it probably
> isn't going to do well. If the inverter can't supply 120 at whatever amperage the microwave wants to start up, it ain't gonna work.
>
> Be prepared for more and more electronic equipment to use switching power supplies - they are much cheaper to make than a transformer system. My
> washing machine (Lucky Goldstar) uses a switching supply and a DC motor and controls. I don't know if the steam generator is straight off the AC line
> or off the supply.
>
> Switching supplies do >not< like squarewave power.
>
> --johnny
> --
> '76 23' transmode Norris upfit
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my dirty life and times" --Warren Zevon
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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