| Re: How to disconnect my Norcold refrigerator from A/C 120v [message #317433 is a reply to message #317402] |
Fri, 12 May 2017 09:20   |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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A Hamilto wrote on Thu, 11 May 2017 20:14Matt Colie wrote on Thu, 11 May 2017 18:09Well, Here is another set data points....
My 73 23 (S/N 1650) did have a line cord and a plug.
The reefer was not on its own circuit, but that is not what killed it.
The only GFI are those I added.
There is a reason to keep the 120V power available. It just may not be worth the risk. If you have a coach that has the house bank in the front and you are trying to recover it with the buzz box powered from the APU, the line loss though the 25' of #10SAE wire (note - NOT AWG) is enough to make this operation problematic - As in the best charge rate you can get is about 25Amp.
That is my final answer and I don't need to call a friend.
Matt - Just greased his Lenzi hubs for the first time
If I needed all the amps from the charger to rejuvenate the house bank, and the 5A to the fridge was going to make or break the victory, I would turn off the fridge (in the case that I didn't have a way to run it off 120VAC). The fridge isn't that big, and there isn't that much food in it. But you shouldn't have to do that. Of the two ways I have suggested to increase the efficiency of the fridge, either method can re-use the existing voltage selector relay to retain dual voltage capability.
Aham,
What I am suggesting is that GMT&B original design was flawed. This is why they added (cobbled) the outside venting of the reefer for hot climates (but neglected to order the closing off of the original internal venting allowing communication between). They undoubtedly got both complaints about the charge rate and the warranty for the reefer being killed by the swing motor failure before the started installing absorption units. There were undoubtedly a few engineers hustling to get this all in a row. In real terms, the development time for the coach part was very short and did not allow for serious validation. - Says the guy who did vehicle validation. - This is not the first time and sure was not the last. I can provide many other anecdotal examples if you provide the beer.
But, after my own personal development, the only way to get serious on a decent house bank (more than a single Gp.29) is to relocate the converter. The possibility of successfully installing the required copper has a very low probability.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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