Tequila
Canada - Summer, Mexico - Winter
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Joined: 12/01/2012
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pianotuna wrote:Tequila,
Are you saying the shore power source is not fused or has no circuit breaker? I can't see how adding an additional breaker--if there already is one would help.
Thanks for posting the chart--it is where I did the math from for the buck and boost percentages. So it is buck of -10% (135 volts), boost of +10% (110 volts) and additional boost of +20% (100 volts).
The buck is a calculation only. The boosts were checked by actual measurements, but under no load.
BTW the lowest voltage I've measured was 99 under no load and 97 under load from air conditioner. The Sola basic allow me to cool down my RV safely.
Based on the fact the 8000 does not have 2 hots, i see little reason to use it rather than a 4000. I have had voltage drop to 80 volts on one occasion.
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CA Traveler
The Western States
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Joined: 01/03/2004
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Back in the day when pianotuna started posting about the Sola device which had both buck and boost capability I wanted one for my 50A RV but that was not available.
I think pianotuna got one with some skullduggery (just kidding) and it's served him well for 30A. If the device was available in the US/Canada I suspect there would be more posts.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland
Bob
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pianotuna
Regina, SK, Canada
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Joined: 12/18/2004
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CA Traveler wrote: I think pianotuna got one with some skullduggery (just kidding) and it's served him well for 30A. If the device was available in the US/Canada I suspect there would be more posts.
One of the Canadian members kindly offered to transport one for me from Mexico. It was kind of he and his wife to do so.
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.
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pianotuna
Regina, SK, Canada
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Tequila,
80 x 120% ~= 96 volts. I guess at that voltage one is pretty much hooped. That leaves generator for large loads and solar for low loads.
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Tequila
Canada - Summer, Mexico - Winter
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This has come up again with a customer. RV 50 amp is really 2 30 amps split between 2 different zones on the RV, A 50-30 amp adapter does bridge the 2 halves of the 50, but ONLY FROM the point of the RV, not the pedestal. A 50-30 amp adapter It is designed to plug into a 50 amp pedestal where it only picks up 1/2 of the circuit it then bridges the 2 inputs from the point of view of the RV..If it bridged the 2 halves at the pedestal end which are out of phase, it would trip the breaker..
Therefore the only way to get true 50 amps at the RV is to use 2 ISB 4000's and an an 50 amp adapter cable splitting the 2 phases, one to each of them. A big headache unless you have room to wire 2 of them permanent into the rig.
In other words buy the 4000.
* This post was
edited 12/30/21 11:01am by Tequila *
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pianotuna
Regina, SK, Canada
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Tequila,
I've now "tweaked" the Sola Basic to "cut in" at 113 volts. It is a little better fit than 110 and boosts iirc to 122 volts from 113.
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Tequila
Canada - Summer, Mexico - Winter
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I notice mercado libre sells them
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rocmoc
SouthWest USA
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Joined: 09/30/2006
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Regarding 50amps. We have a 50amp Motorhome, fortunately with just the basic old style power switch box at the entry point in the side bay. We have never had a problem using just 30amp in Mexico. You have to manage your usage and only one AC unit at a time if at all. We carry a couple of fans with us that move the air when needed. We use the fans even when connected to shore power. Our Sola Basic is wired into a 30amp cord and use an adapter at the male end of the 50amp cord. Never a problem! We do carry an extra switch box and Progressive Surge Protect with us when and if needed. As a point of interest when we were staying in Villa Corona Mexico a few years ago, a Huge Motorhome arrived with a Caravan. This rig had 3 (THREE) AC units and had the AC on the entire time. Never checkout how they were doing it, just thought it was weird at the time as we never turned ours on the entire stay. For those who have never been to Villa Corona, cold is be more of an issue than heat.
rocmoc n SouthWestUSA / Baja&RockyPoint next winter
rocmoc n Great SouthWest USA
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