Everything I've read on crimp connectors says they work just fine under man y environments if designed for those environments. The main issue with cri mp connector problems is using worn out tools. The crimp joint requires pr ecise crimping and the proper tools have finite lifetimes and must be repla ced when worn out.
-- Rick C. --+ Get 1,000 miles of free Supercharging --+ Tesla referral code - https://ts.la/richard11209
Rick C wrote in news: snipped-for-privacy@googlegroups.com:
There are NO crimp connectors designed for exposed outdoor use.
They are all meant to be covered or have a liquidous anti-oxidant paste put on them at crimp time and THEN sealed or covered.
The fact that everyone simply does crimp-and-go exposed to the elements does not change the original design use parameters.
It *should* change the installer's reputation, but the folks getting the installs are not knowledgeable enough to QA the work done, and most do not inspect at all.
I would say that upwards of 80% are likely fairly shoddy. The country is full of corner cutters who dismiss the importance of things. Nearly half the country is that stupid.
I spot weld with solder on, after crimping. I don't want to repeat the Tesla/Walmart experiment.
If you need air conditioning after sunset, why don't you use the daytime PV production to cool some water to 0 C (or even make ice) and during the night dump air condition heat into that chilled water ? No energy hungry compressor required, just some circulation pumps. An insulated water tank is going to be cheaper than batteries.
Much of the washing machine electricity consumption is due to heating the water to 40/60/95 C. That water could be warmed during the day in solar thermal collectors or use air condition exhaust heat to preheat the water.
So virtually every auto made today is using crimp connectors against the recommendation of the manufacturers???
Why do you make up so much stuff that you know is not fact?
-- Rick C. -+- Get 1,000 miles of free Supercharging -+- Tesla referral code - https://ts.la/richard11209
Crimp connections are gas tight, cold welded
If it is done correct, the corrosion will only happen on the outer surfaces, so no need for any funny stuff
Cheers
Klaus
I was appalled by the mismatches I found among different manufacturer's cables and connectors I purchased for some experimenting. (Some were very inexpensive eBay and Amazon parts.) Clearly an installer needs to verify ahead of time, that their inventory of parts are properly matched.
Quick scans with a thermal imaging camera, right after installation, and periodically during its operating life, may reveal some poor connections.
--
Thanks,
- Win
Rick C wrote in news: snipped-for-privacy@googlegroups.com:
No, they are not. Even the battery cable lugs are no longer that way. At least not on any reputable car maker.
The connector manufacturers? They will flat tell you oxidation is a problem.
The car makers use pre-made harnesses. Those crimps get sealed into the connectors.
Automotive wiring hanesses are sealed connectors nowadays. There are single connection exceptions.
Why do you take a cursory glance at everything and then think you know f*ck all about what is going on?
Klaus Kragelund wrote in news: snipped-for-privacy@googlegroups.com:
No, they are not. The mated wire strands are... somewhat.
Not true. No motter how done, outside exposure advances and promotes oxidation, and that eventually creeps through the connector crimp. A paste application will keep this from happening.
The original spec before the cable compnaies all started using high quality sealed F-connectors was to return to and recut new fittings (on every installation) at the pole taps every two years, and to cut the cable back 4 inches and recut a new fitting once every ten years. Many but not all started having the installers place paste on the fittings as well. The main upgrade was the oring sealed fittings though.
Now, I am sure their maint routine has been stretched out due to the new fittings.
And they were only dealing with a single center strand and whatever intrudes on the braid crimp.
Electrical connections moving actual substantial currents need to be high quality throughout their life.
Otherwise losses get introduced... failure modes even.
The topic should be "Solar panel installation degradations". In many cases, the elements tying everything together suffer far more than the panels themselves.
Even if that was true it is still a huge help because in many regions there will not be any heavy rain following for many months. Often no rain at all. Look at the hose as a "cleansing rain substitute".
That is one way. The redneck way which I used to paint our house is to detach all hardware from the end of a pole trimmer (the kind used to prune trees high up there) and use its extendable fiber pole alone. Got to neck down to a smaller and lighter hose though because it otherwise bends too much. The only other tool you need is the usual ... duct tape :-)
-- Regards, Joerg http://www.analogconsultants.com/
In a seldom-replaced installation, why not crimp or use wire nuts?
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Big surprise, AlwaysWrong is wrong again.
Nonsense. TAny exposed parts have to be designed for outdoor use but crimping is no problem. Properly done, crimping makes a gas-tight seal.
ALwaysWrong.
Yawn. Wrong again.
That sounds like a serious DIY project. If it makes sense for residential use, it would be widely commercially available.
It is done to some extent in big facilities, but the thermal storage is ice, not just chilled water.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Because he's *always* wrong. It's in his genes.
Of course you're wrong, as always. Almost every connector in an automobile, *all* manufacturers, is crimped. Moron.
Wrong again. They are automotive grade connectors but they're almost
*all* crimped.
Wrong again. Premade, sure. Sealed into the connectors, wrong. "US Car" connectors are not sealed and hundreds are used by every car manufacturer in the US. The Japanese have a very similar connector, but from other, usually Japanese, manufacturers.
Wrong, as usual.
Wrong, always wrong, AlwaysWrong.
Yes, he is a reliable reference for wrongness.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
Correct. The contacts are designed to resist corrosion but it's not happening on the contact surfaces.
Ho _do_ you do it, AlwaysWrong?
Always wrong. Pastes are used for dissimilar metals but there is no reason to use it on properly designed connections/connectors.
The moron AlwaysWrong thinks an 'F' connector is a properly designed connector.
An irrelevance in the middle of bullshit.
No shit? But it has nothing to do with crimped connections, AlwaysWrong.
Always, always, always, AlwaysWrong.
Making ice, or even chilling water, isn't a very efficient process. It's far more efficient to just tie to the grid. If you can't be grid tied, sure, anything goes. Efficiency and cost are secondary.
,
ave.
he wants to make.
the shelf battery storage. It's competing with diesel-powered on-site gene rators which are lot more expensive than regular grid generation.
that suggests they are useful - it's cheaper to store solar power you don' t use than it is to sell it to the grid, then buy it back later.
Using the grid might be power efficient, but not cost effective. We would end up paying connection fees into the grid and again out of the grid. To fight local home solar, the power company is increasing connection fees run ning the meter forward as well as running it backward. Energy costs are se condary.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.