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 > Your search for posts made by 'BFL13' found 2004 matches.

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  Subject Author Date Posted Forum
RE: Drawing off two banks thru Switch?

IMO get a calibration cross-check on that inverter's read-out. It is showing 12xx vice 10xx on that Danby and also your PM4 wattage readings did not match a 45 amper but did a 55 amper. Not sure how to calibrate that in real life. Switch the Trimetric to watts instead of AH while the inverter is running something?
BFL13 09/30/14 05:37pm Tech Issues
RE: Drawing off two banks thru Switch?

Not sure how the load would be shared in that case. My 700w Danby microwave wants 1050w input and on the Can Tire Xantrex 1000w PSW inverter, it runs ok, showing 1050w on the inverter's read-out, with the inverter showing the "overload" light on, but it still running. Where did you measure the 12xx watts? I only left it on for a few minutes to see if it worked, so can't say how it would do for say a 20 minute job. ISTR there is a short time it will keep running but then reverts to its "continuous" rating, but not sure.
BFL13 09/30/14 10:40am Tech Issues
RE: when should a powermax pm4b drop into float mode

What in the world are you guys talking about or worried about? If you get a 30 or 75 amp unit, it doesn't matter if the fuses are 30, 35 or 40 amps on any of them. A pair of 30s on all of them would be fine I would think. These are reverse polarity fuses AFAIK and enough to protect the unit if we accidentally cross the battery leads. Check their amp output if you have the ability. Mine cranks out 3% more than rated when my batteries are low, except our PD didn't after 15 mins. FWIW, my Iota did too. We have a fleet of RVs so luckily can test several of them. I like the Boondocker and waiting for the adjustable one to arrive. On my 100amper it appears the four 40s are all on the positive output wire so the 160a of fuses carries the full current. AFAIK with any brand it is the same idea and you see more amps of reverse polarity fusing as converter rating in amps goes up. We had a thread about this a long time back and can't remember how it all works. Something about the two 30s making a 60. I don't know why they split it up into several fuses. Perhaps because it is easy to buy those 40s and 30s if they blow. Yes the converters seem able to do a little more than rating if you get them close to the batts on short fat wire. I can get 56a on my 7355, I got 61a on my old Paramode 55 (RIP), I can get 104a with my 100 amp PowerMax. I do like my PowerMax too :) ------------------ OP, yes the shipping thing is a turn -off. When my Paramode converter quit working, the warranty drill was for me to ship it to them ($50 approx at the time) and IF they agreed it was a warranty item, then they would fix it and pay up after. I had monkeyed with it by using its internal pot (like the one in the PowerMax) so I figured they would deny my claim just for that, and didn't send it in. Perhaps you could show them some photos of the unit with the lid off and one of the lid's label showing the 75 etc and the end with the fuses to convince them it is peculiar instead of having to send it. No idea. They are good guys if you don't annoy them, same as anybody. :)
BFL13 09/26/14 08:20am Tech Issues
RE: when should a powermax pm4b drop into float mode

IMO ignore everything except its amps output. If it walks like a duck... etc. Anyway you got the original 60 from Randy and sending it back to Florida didn't work out. So now you want him to look at that "75" himself (he has a shop) and pay the shipping and try and figure it all out, since the other guy didn't get around to it for whatever reason. Info Errin on it too. He doesn't like cranks but is reasonable with reasonable people, and he has some sway with Randy AFAIK. So IMO now this isn't a tech problem, it is a customer problem you can sort out with those guys.
BFL13 09/25/14 08:05pm Tech Issues
RE: when should a powermax pm4b drop into float mode

Randy said there should be two 40a fuses. The label says boondocker pm4b-75, 14.6 boost, 13.6 normal, 13.2 float, 75a. Time to tell Randy your story how you seem to have a 45a (two 30a) marked 75, that only does 45a, instead of a replacement 60 that you were supposed to get under warranty. Yes you messed with the pot but that was to try and get 75A out of it. Be polite of course. No doubt it was an honest goof. Weird though :) Hey if it is a 45 you can delete the OP and this entire long thread can go away! :)
BFL13 09/25/14 07:35pm Tech Issues
RE: when should a powermax pm4b drop into float mode

That bench test was for the PM3 that does not have the 15 min feature. It used to say you got an initial flicker of 14.4 then it went steady 13.6ish. My PM3 did exactly that before I did the mod on it. Getting 14.6 at first on bench test with the PM4 seems reasonable IMO especially if it drops to 13.6 after 15 minutes. ---IMO there is no way a 75 amper will have only two 30s (green ones) like the 45/55 ones do. Two 40s yes (red ones). I don't know what the 60 amper has. Two 30s would leave no margin at all on a 60amper. You should confirm with Randy for sure what the fuses are on a 75. If yours is not a 75 then IMO take it private with them for possible solving.
BFL13 09/25/14 09:03am Tech Issues
RE: when should a powermax pm4b drop into float mode

confirm the two fuses are 30a. I see Randy's new adjustables have all the same photo of whichever one it is, and it has two 40s (they are red)so maybe it is the 75. Iota DLS-75 has two 40s http://www.wegosolar.com/products.php?product=Iota-DLS%252d75-Battery-Charger AFAIK the reverse polarity fuses should total more than the amps rating of the converter
BFL13 09/24/14 09:13pm Tech Issues
RE: when should a powermax pm4b drop into float mode

i see 14.6v and 55a in that photo. Could be 14.6. Just makes it even more confusing since it is not a Boondocker. (no 4B and Boondocker) Sigh. What exactly is on your label in that location?
BFL13 09/24/14 08:54pm Tech Issues
RE: when should a powermax pm4b drop into float mode

Here is an ad for a 75 but the photo shows it says 55 on it with two 30s and it goes to 14.4 on the label. http://www.advancemcs.com/sps/auto-accessories/converters/sp_7454/PM4-75 I'll try to find a photo of an actual 75. Gave up on that! I see the Go-power Max versions also have that 85 across the board but say the 75 needs 12a and 100amper needs 17a! No mention of PF correction for the 75 and up. (they also still have instructions in their manual that apply to the old Iota they carried wrt the IQ4, so it is all a muddle.) Go-power lists the wattages as being for "continuous" operation so that might explain some diffs in the specs between that and max or peak? What a zoo! :( Anybody out there have a PowerMax 75 and can say what reverse polarity fuses it has? Thanks.
BFL13 09/24/14 08:15pm Tech Issues
RE: when should a powermax pm4b drop into float mode

It is hard to keep up, but AFAIK the "real" PMs (3 and 4) are to 14.4 while Randy's 4Bs are special by going to 14.6. However lately the "real" PMBCs have been upped to 14.8 (except the adjustables, which don't have staged voltages. In this case the "real" ones go to 16.5 but Randy's go to 15.5) Ok so we need to find out what the reverse polarity fuses are on a 75. Hard to believe it is only two 30s.
BFL13 09/24/14 08:03pm Tech Issues
RE: when should a powermax pm4b drop into float mode

The 93 indicates PF corrected while the 85 goes with the lower amp, non-PF corrected ones. So with the 75, VA should = watts but the watts given for the lower amp ones would actually be higher in VA than the watts listed. With the unit on a Honda gen, the VA would be that, but with an inverter you have the inverter's efficiency to consider drawing battery amps to make 120v output. "So the divide by 10 rule" I was comparing the pm4-75 pfc, which is on the page you linked, with the pm4b-75, which comes up after clicking on the boondocker series square to the right, then clicking the link to the 75 amper. yes, the inverter said -90amps, so i divided by 10 to get 9a 120v. Good catch. Randy's site seems to have a typo there, where the 75 is PF corrected but says 85. It should say 93 like the other PF corrected ones. Those guys can't keep up with all the changes they are making! :)
BFL13 09/24/14 07:22pm Tech Issues
RE: when should a powermax pm4b drop into float mode

Just to clarify, you got the 75 from Errin? But he doesn't sell Boondockers, Randy does. What does the label say on it--PM4-75 or PM4B-75? Also it looks from Randy's site that his labels say Boondocker but the PM ones say PowerMax. What does yours say? Here is a photo of my prototype adjustable 100amper. It is a much modified PM3-100. Randy's new adjustable ones are similar except no carrying handle it seems. http://i61.tinypic.com/2vrwz69.jpg Here is that strain relief I rigged for the jumper cables I use for it as a portable http://i62.tinypic.com/2569yk8.jpg I used a bit of red tape to mark the pos terminal better. I have since used a marker pen to add gradations around the knob for some settings such as 13.6, 14.8 so I can set the converter voltage even when it is attached to the battery which skews the voltage showing on the meter some.
BFL13 09/24/14 05:58pm Tech Issues
RE: Relocate WFCO converter?

No need for 4. The existing DC fuse panel to battery wire will be your new converter-fuse panel wire plus the shorter converter-battery wire you will have sharing with the inverter input wires I am wondering if that would also make it real easy to trigger boost in the WFCO by operating the inverter briefly when turning on the WFCO.
BFL13 09/24/14 03:23pm Tech Issues
RE: when should a powermax pm4b drop into float mode

The 93 indicates PF corrected while the 85 goes with the lower amp, non-PF corrected ones. So with the 75, VA should = watts but the watts given for the lower amp ones would actually be higher in VA than the watts listed. With the unit on a Honda gen, the VA would be that, but with an inverter you have the inverter's efficiency to consider drawing battery amps to make 120v output. "So the divide by 10 rule"
BFL13 09/24/14 01:54pm Tech Issues
RE: when should a powermax pm4b drop into float mode

IMO the batteries are fine. You got them as good as they can get, and those SGs and resting voltages after differences are not especially significant. When the batteries really do go downhill someday it will be obvious. It is very unclear what that particular 75 amper behaves like. I don't remember you saying it ever did 75 amps even for the famous 15 minutes before or after the mod. I see Randy has his adjustable voltage version 75 amper up now. The owner's manual should be interesting. Maybe Randy can say what happens to the regular 4B 75's stages when you do the mod like why that 15 min is still there, etc. No problem with the PM3 so why is there with the PM4 mod? As for the pm4b, indeed, it has never gone above 46 amps output, pre or post mod, so I was becoming more and more convinced it was a 45 amp unit labeled as a 75 amper. I figured one way to figure this out was to check its input current, (Erinn had told me it should be about 9 amps), and I was getting impatient waiting for my new clamp-on AMP meter to arrive, so I powered up the pm off the near full bank, through the inverter, and hit the not so charged bank for about 20 seconds with the pm set to warp speed (full voltage). The pm came on in what I like to call "Boobs Mode" (neither boost nor abs) and volts began to rise to the lower 'abs' setting, which is the usual for the pm on discharged batts ... Hey, maybe that's what the B in pm4b should stand for??? ;) ... The Trimetric showed the amp draw quickly rise to the -90 amp range; so about 9 amps at 120v, like erinn said. Just for amusement, I switched things up and hit the near full bank the same way, and of course the voltage shot way up, real quick, and set off the low voltage alarm on the inverter; and the amp draw quickly rose to about -90 amps as before. So just as I was becoming convinced I was dealing with a 45 amper, it appears it is a 75 amper. So now I have to consider the possibility there is an internal problem with the pm, and something is keeping it from putting out its rated amperage..... IMO Errin was mixed up on that 120v draw, as you noted before on the actual specs it should be 12a. http://powermaxconverters.com/pm412volt.html I get about 90a draw by an inverter running a 1000w kettle or toaster. If the unit is drawing about 1000w if fits the watts spec. But those watts spec figures are suspect IMO. Eg the 1440 for the 100amper is way different from the previous spec of 1600 something , which made more sense. Also divide the watts by the 108 voltage and you don't get the amps listed either. Another clue as to converter amps size is the set of reverse polarity fuses on it. EG a typical 55amper would have two 30a DC fuses. My 100amper PM3 has four 40a fuses. So I think a 75amper would have something in between. Another possible clue is the size of the thermistor. The bigger converters have more of a thermistor. It is that black disc on two legs just in from where the 120v cord goes onto the circuit board near the 120a glass fuse. What is written on that thermistor?
BFL13 09/24/14 12:03pm Tech Issues
RE: Suggest: ac/dc Inverter withOUT charger

There are several transfer switches by different brands for different prices. I do not know which features make the more expensive ones worth it, but if you are in the market you would know what you want. I gather transfer speed might be one difference, so you don't have to reset the television settings or whatever. Here are some examples: http://www.bestconverter.com/30-Amp-Transfer-Switches_c_182.html
BFL13 09/24/14 10:10am Tech Issues
RE: when should a powermax pm4b drop into float mode

IMO you have to wait a few days to get the true resting voltage that goes with their SOC or condition. Note that a "full" but sulfated battery shows figures somewhat like the SOC tables for how much it has lost capacity. EG a full batt that has lost 20% might show 12.55ish resting when full as it can get, with SG maybe 1.260 approx. I have some notes from a few years back when monitoring "resting" voltages after getting the batts to as full as they would get hitting 16v. These were (two older , one newer) 27DCs but got similar results with 6s ISTR. Three batts separated, each acts a little differently. The idea is to figure out when surface charge goes away and you are at actual resting before the "self-discharge" starts Next day not 24hrs yet, all were still in the low 13s so starting day after that (Day, batt 1, batt 2, batt 3) 1- 12.86, 12.87, 12.89 2- 12.83, 12.82, 12.88 3- 12.80, 12.78, 12.86 4- 12.79, 12.76, 12.85 5- 12.78, 12.74, 12.85 6- 12.78, 12.74, 12.84 7- 12.78, 12.74, 12.84 8- 12.77, 12.73, 12.83 9- 12.77, 12.73, 12.83 14-12.76, 12.72, 12.82 20-12.74, 12.71, 12.80 With two beat- up 12v true deep cycle Trojan T-1275s charged to 14.94 together, then separated: one hour later- 13.43, 13.40 next day - 12.93, 12.90 2- 12.80, 12.76 3- 12.73, 12.68 4- 12.66, 12.61 5- 12.63, 12.59 6- 12.62, 12.58 A year later, the two T-1275s are still different where I can identify which is still the better one. I use them in parallel and separate them to float when not camping. So it appears to take a few days before the voltages stall out to what may be the "resting voltage" and then slowly fall from there. Self discharge is less if the battery tops are clean. If left linked with another battery then there can be action between the two that affects the voltages.
BFL13 09/24/14 09:56am Tech Issues
RE: Inverter and deep cycle battery question.

BFL, If you re read the post, you will notice I referred to the sw series before a link to another inverter appeared. You then chose to single my comment as incorrect. I don't appreciate being corrected when not warranted. Dave Sorry. I didn't notice at the time the next poster linked to a different one and not the SW you mentioned.
BFL13 09/24/14 06:56am Tech Issues
RE: when should a powermax pm4b drop into float mode

IMO the batteries are fine. You got them as good as they can get, and those SGs and resting voltages after differences are not especially significant. When the batteries really do go downhill someday it will be obvious. It is very unclear what that particular 75 amper behaves like. I don't remember you saying it ever did 75 amps even for the famous 15 minutes before or after the mod. I see Randy has his adjustable voltage version 75 amper up now. The owner's manual should be interesting. Maybe Randy can say what happens to the regular 4B 75's stages when you do the mod like why that 15 min is still there, etc. No problem with the PM3 so why is there with the PM4 mod?
BFL13 09/23/14 09:39am Tech Issues
RE: Inverter and deep cycle battery question.

BFL, Do a better search for the Xantrex sw series. It is a true sine wave inverter. This is a bullet from the first vendor I saw. "Xantrex Freedon SW2012 Inverter/Charger Features •Pure sine wave output to operate sensitive electronics" Dave Yes but that is not the same unit. Their names are confusing. The PSW one has a 2000 with a 100a charger or a 3000 with a 150a charger. The one linked earlier has smaller chargers and is MSW. Repeat of earlier link http://xantrex.com/power-products/inverter-chargers/freedom-hf-newgen.aspx
BFL13 09/23/14 07:27am Tech Issues
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