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 > Your search for posts made by 'CA Traveler' found 1597 matches.

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  Subject Author Date Posted Forum
RE: mppt vs pwm

I can't wait for Piano to show you how to balance all those batteries together ;)X2
CA Traveler 01/29/15 07:27pm Tech Issues
RE: mppt vs pwm

BTW If you go with a 24V battery setup the MS controllers will handle double the wattage.
CA Traveler 01/29/15 07:24pm Tech Issues
RE: mppt vs pwm

Bedlam, With those batteries you appear to be beyond the pastie panels. I just installed 3X250W, MPPT60 and remote for $1500 for everything including wiring and mounting. A fourth series/parallel flat panels will give you 60A. The panels were $200 which I picked up as shipping is expensive. Sounds like your trailer might handle even larger sized panels (physical and wattage). Suggest you figure out how much power you need and possible upgrades.
CA Traveler 01/29/15 07:20pm Tech Issues
RE: mppt vs pwm

CA T... said, "No need to use 13V as the controller will ramp up discharged batteries to 14.8V for bulk charging." Depending on the C-rate, it could take hours to get to 14.8v. (Better safe, than sorry).The unquoted part of what I posted was about the MS MPPT45 and it's derating at 45A as per the specs. At 45A it's not going to take hours to get to bulk charging. Correct MS is better safe than sorry by protecting the controller against more than 45A output and over paneling. Less quality controllers well.....
CA Traveler 01/29/15 02:24pm Tech Issues
RE: mppt vs pwm

More than 2 parallel panels should be individually fused. Accepted practice is panel wiring to a combiner box with fuses and heavier wire to the controller.
CA Traveler 01/29/15 01:57pm Tech Issues
RE: mppt vs pwm

Since 250W frame panels are available for $200 have you considered that option?
CA Traveler 01/29/15 01:54pm Tech Issues
RE: mppt vs pwm

If all four panels were in connected in parallel, it would give me 544w @ 24VDC (just under 23A). Running this one feed to the inputs of three 20A controllers should balance out between the controllers. Am I missing something in this type of setup?My understanding is that parallel controllers are connected on the controller outputs only to the battery and not on the panel inputs.
CA Traveler 01/29/15 12:52pm Tech Issues
RE: mppt vs pwm

Morningstar documents their MPPT45 controller for overpanel and derate to 45A plus it's stated solar input is 600W. With tilted panels you might occasionally reach the limits for a short period of time. With flat panels not likely. No need to use 13V as the controller will ramp up discharged batteries to 14.8V for bulk charging.
CA Traveler 01/29/15 12:48pm Tech Issues
RE: Dedicated 20AMP outlet from Generator

If your transfer switch makes/breaks the neutral/ground bond, running a separate bonded receptacle may lead to problems with plugging the RV into a GFCI receptacle. May or may not be a problem, depending on the wiring of your RV.Typo? Transfer switches switch the hot and neutral. Grounds are all bonded. On board gens should bond the neutral and ground so that with gen power they are bonded for the rig and the transfer switch isolates that bonding from shore power. There shouldn't be a GFCI problem but like you said it all depends...
CA Traveler 01/29/15 09:32am Tech Issues
RE: mppt vs pwm

Grizzzman, I was thinking more in terms of the controller protecting itself, like current limiting on a power supply unit or converter-charger. But now that I think about it, it's probably not a protection found on pwm controllers; although I've read here that some controllers do "clip" amps, but not sure if that only applies to upper end mppt controllers?It sure applies to the MS MPPT60 which clips at 60A
CA Traveler 01/28/15 07:04pm Tech Issues
RE: Quartzsite and Joshua tree NP

Difficult to judge the crowd size. Greasewood directly across I10 had significant empty RV sites mid week - if you choose to call them sites. We had no problem parking except in the big tent area which as always has inadequate parking. But then I just walked from Greasewood. The 10% city tax isn't helpful.
CA Traveler 01/28/15 05:52pm RV Parks, Campgrounds and Attractions
RE: mppt vs pwm

Actual data can help with the understanding. This data is from a MS MPPT60 controller on 1/24/15 with clear skies and 3x250W panels. The batteries were fully charged and the large transitions were the result of adding/removing a 120A inverter load. The data shows the panel voltage and other changes as the controller adapts to the changing load. http://i369.photobucket.com/albums/oo134/catraveler/Panel%20Voltage_zpslb78yawp.jpg
CA Traveler 01/28/15 10:12am Tech Issues
RE: Cougar blows breaker.

Each leg should be 120V to ground or neutral, 240V leg to leg, 0V neutral to ground. Testing without a load might might not show a high resistance problems since meters typically draw very little current.
CA Traveler 01/27/15 11:21am Fifth-Wheels
RE: I want to install a 12V digital volt meter

With 2 banks I used a SPDT center off switch so I could watch either bank or not.
CA Traveler 01/27/15 09:05am Do It Yourself Modifications and Upgrades (DIY)
RE: What could make LED bulbs burn out?

Most of the M4 bulbs work with either polarity, so it's like plug and play.
CA Traveler 01/26/15 07:05pm Do It Yourself Modifications and Upgrades (DIY)
RE: What could make LED bulbs burn out?

The M4 Products LEDs are regulated and we haven't had any problems. They do cost more than some others.
CA Traveler 01/26/15 01:46pm Do It Yourself Modifications and Upgrades (DIY)
RE: I want to install a 12V digital volt meter

It will be a lot better than the standard idiot lights.
CA Traveler 01/26/15 01:40pm Do It Yourself Modifications and Upgrades (DIY)
RE: Roll Call Alaska 2015

fanrgs, I've lost track of your geology website. In 2013 we were ahead of you so didn't get to observe/learn from many of your postings. Would you post a link as we're planning to return this summer?
CA Traveler 01/26/15 08:51am RVing in Canada and Alaska
RE: Roll Call Alaska 2015

If you try to stick to a 350-mile/day schedule on BC, Yukon, and Alaska highways, you are going to be one unhappy RVer!As I tell my friends you can certainly drive the speed limit or faster - just bring enough money to buy a new rig! :B
CA Traveler 01/26/15 08:48am RVing in Canada and Alaska
RE: Quickest route from Tacoma to Phoenix for the Super Bowl.

5, 210 mid day, 10 is the quickest. Otherwise 5, 58, 395, 15, 215, 10.
CA Traveler 01/25/15 08:42am Roads and Routes
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