Search results

So Quantum physics is hard, thats why I changed my major from Physics to engineering way back when. But... just as I am not qualified to comment on quantum, he is likely not qualified to comment on climate. Einstein sawed the bottom third of a centerboard off of his boat to get into shallower...

Clearly you dont understand instrumentation. So if I have a poorly calibrated thermometer and it told me yesterday that the temp is 50F when a precise instrument told me the temp was 52.3F and today the poorly calibrated instrument tells me the temp is 51F, do you think today is hotter than...

OK, I'll try again. Every engineering problem NO MATTER HOW LARGE, is an integration of a lot of smaller problems. Thus much is done with integral methods. The fundamental physics are actually quite simple. Though the math is not trivial. How does radiation pass through a gas?. How much goes...

We dont operate on the assumptions that people tell us to, or pay us too. You know I take some of this personally. Those who dont like the science of climate change say those of us who work in the field (I do so only peripherally) must all be on the take, as part of some Q-Anon conspiracy. I...

WOW! Just visited this thread after a long absence. If global warming isn't real how come you cant ice boat on the great south bay anymore? Now Bicker!

Yeah, but... what a waste of ground. That could be parking, BBQ, Dog run, home sawmill. etc

So after the upgrade to Lithium I went a little crazy and went the whole Victron route. Used approximately 100 hours No issues 80 Amps 14.4 Volts Ships from 11796

Have OEM converter from 2019 Fifth Wheel. Replaced when upgraded to Lithium 60 Amps 13.6 VDC Battery Type: Flooded Lead Acid, AGM, Gel Was working when removed. ( I know! I know!) Ships from 11796

So plan D. Reamed out the positive terminal on the shunt to 1/2" and bolted the shut-off directly too it. Now I have a nice run with a single 4/0 wire.

Just ordered a 1" by 1/4" copper bar. I am going to build a cradle for the main shut off that stradles one of my battries Buss bar to battery terminal, 4/0 to distribution. Going to wrap the buss bar in heavy duty electrical tape. Now I just need to find longer battery bolts. Thanks ANdy

So I had the cables made by Current Connected. There wire is something called Power-Flex. Would welding cable be more flexible? Andy

Folks, I have pretty cramped electric compartment in a fifth wheel. I am using 4 200ah Amprer/Li-Time batteries in parallel. I have am using the Victron Lynx Shunt and Distributor Sytstem. I am running a 4/0 cable from Battery 3 neg to the neg of the Shunt I planned on running 4/0 cable from...

So it is four Ampere/Li-Time 200 ah batteries. I think they are well secured, but... an Trailer is a continuous earthquake. So I am likely being overly cautious, and my box, hold downs and wiring clearly exceed the build quality of the trailer itself ;-) Just thought if the flex tape or other...

So I did plan on rounding and sanding etc, Just wanted a belt and suspender. The FR-4 is pretty rigid and that may work for the flat surface of the plywood. Maybe some liquid rubber on the rounded and sanded. I am always concerned about fretting, Even wire on wire can wear on insulation. Thanks...

This might do as well https://www.amazon.com/dp/B0CCV544HF/ref=sspa_dk_detail_0?ie=UTF8&psc=1&pd_rd_i=&pd_rd_i=B0CCV544HFp13NParams&s=kitchen&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM

Folks, Just build a plywood battery box for my fifth wheel. There is a solid 1/2 inch of clearance between the plywood cover and terminals. As this box will be subject to some thumps and bumps on the road, I worry a little bit about inadvertent contact between a terminal and the cover. I was...

So I am FURIOUS. At no point has the Ampertime to Li-Time name change been presented as anything but a name change. I was building a new battery box as I have added two Li-Time battries to my existing Ampertime batteries. I notices the cases were slightly different sizes, The Li-time is about a...

Just noticed a case size difference between my 2 new 200 Ah Li-Time, and my 2 older (18 mo) 200 Ah Ampere Time batteries. Kind of stuck with them now, but a bit worried about putting all four in parallel. Glad I double checked, I was about to build up a battery box based on the smaller...

Anyone have a source for quality 1'2" lugs for 4/0 wire? I need the 1/2" for my battery disconnect switch Thanks ANdy

I guess whats bothering me is that a 3000VA inverter at 92% efficiency and 12.8 V (20% state of charge) should be at 255 Amps continuous. That would be a 4/0 wire, but I see a lot of installs using 2/0. Is it just that the run is so short. The Blue Sea calculator...

its the 12-120/2

Folks I am putting in a multiplus-II in my fifth wheel. I am using the Lynx 1000 Shunt and Lynx 1000 Distributor I will be starting with two connections to the Distributor, one for the mulitpluss and one for the trailer loads The mulitpluss fuse on the distributor works out to 325 amps based on...

No one is saying its going to power the whole neighborhood. But to there are scenarios where it could shock a lineman working on your drop when he thought it was powered off. You dont have to electocute someone with your 240 to kill them. You could give them a heart attack, they could fall off...

Definitely want some solar, but need the AC/DC infrastructure upgrade first. I find that my current 10amp charging system off the 7 pin works pretty good. The voltage drop to the input side of the DC/DC charger is about 2.5 volts, not great, but not excessive. The 10 amps seems to keep up with...

So I would never expect to pull 100 amps off my alternator for charging, I would be more than happy with 40 and will willingly settle for 20. A five hour drive pumps 100Ah back into the battery bank, more than enough to cover any usage by the trailer while being towed. The only real load is a...

So I noticed on Wills video for this system he doesn't have a battery isolation switch. That is generally a given on mobile systems.

I do keep thinking of a separate battery, but that becomes one more maintenance head ache. If you look at the more schematic representation I posted, the system is set up so that if your batteries are depleted you can still perform your get out of dodge functions off the tow vehicle. But those...

This is my current plan for a small distributor box using some Blue Sea Buss bars

Folks, I have the budget, so I am going the Victron route for my 5th wheel trailer. Using the Multiplus-II and with the Lynx Shunt and Lynx Distributor. I currently am using a Renogy DC/DC to isolate my trucks 9 pin battery power and the LiFePo4 batteries I am using (Li-Time/ ampere time). It...

Folks, Looking to stock up on bits and pieces and figured I would get the snack pack of crimp connectors that Will P recommends. Alas, they are out of stock. Anyone have a high quality alternative source. Anyone use the low temp solder versions of the E-Volt connectors? Thanks ANdy

Finally opened up the unit. There are four 30 amp automotive fuses hard soldered in parallel on the main board between the hot 12V input and the 12v DC side of the board. Not removable, but there is continuity. Could still have blown one to three and sitll have that Cheesy

So I like that the victron hybrid inverter chargers effectively function as a transfer switch. Thats a big plus on an RV

So for my trailer install, I have tapped into the running light circuit and feed that to the ignition on port of my Renogy 20A DC/DC converter. System only runs with parking lights on. Not the best solution but gives control from cockpit, next step is to control from uplifter switches.

Just an update, the 20 amp DC/DC, with the 10amp current limit switched on has been operational for well over a year now. Several longish hauls where I had no opportunity to plug in to shore power or run the generator. Even that measly 10 amps was enough to add a slight charge to the 400ah...

I have a infrequently used/abused honda 3000is I bought 15? 20? years ago. The initial purchase was driven by noise. The National Parks were imposing generator noise restrictions and the Hondas were one of the few brands that could meet the requirements. I am finally looking to replace it...