You cannot rely on solder to hold when the terminal short circuit temperature is reached and 60/40 solder will already melt at 200c which can a valid working temperature of many cables. And soldering causes a lot of thermal stress on the insulation and the connector assembly.
@@DIYHomesteadProjectsDIYHP10 everyone thinks that soldered wire and mc4 pin is a bad idea And crimping is the best option Crimping makes work fast and easy
@@NorthernRestoration-rk4cu I'm about to start with my new panel setup, and I always prefer soldering. But would it be an issue using 60/40 solder? talking about amps and heat versus crimping which I don't trust because of mechanical stress mostly.
My technique is the same with yours First i crimp the wire and mc4 before soldering And i use 150C° soldering iron The more heat the lead will clings tightly When i was 12 years old i observed that soldering iron with low heat use to solder will not let the lead clings tightly the wire joints
Please use an Amphenol H4 (if I identified correctly) wrench to tighten those, this is not a suitable way as the wrench clicks at the torque spec of the connector.
@@DIYHomesteadProjectsDIYHP10 Great would it be an issue using 60/40 solder, I always prefer soldering connectors. But in solar panels dc voltages and current are to be respected I guess.
How to Solder Wires Together and Make a Waterproof Connection
th-cam.com/video/hl8hPqDPqAw/w-d-xo.html
You cannot rely on solder to hold when the terminal short circuit temperature is reached and 60/40 solder will already melt at 200c which can a valid working temperature of many cables. And soldering causes a lot of thermal stress on the insulation and the connector assembly.
Again, I've used solder on these connections for several years now on several different solar set ups and it hasn't been an issue for me.
@@DIYHomesteadProjectsDIYHP10 good for you mate
@@DIYHomesteadProjectsDIYHP10 everyone thinks that soldered wire and mc4 pin is a bad idea
And crimping is the best option
Crimping makes work fast and easy
@@NorthernRestoration-rk4cu I'm about to start with my new panel setup, and I always prefer soldering. But would it be an issue using 60/40 solder? talking about amps and heat versus crimping which I don't trust because of mechanical stress mostly.
200c is far from valid for mc4
My technique is the same with yours
First i crimp the wire and mc4 before soldering
And i use 150C° soldering iron
The more heat the lead will clings tightly
When i was 12 years old i observed that soldering iron with low heat use to solder will not let the lead clings tightly the wire joints
Hello，We have solar PV connectors, can you let me know if you need anything? Is there anything I can do for you?
Please use an Amphenol H4 (if I identified correctly) wrench to tighten those, this is not a suitable way as the wrench clicks at the torque spec of the connector.
I've used regular pliers for many years now and it has not been an issue for me.
I do the solder wire, crimp to connector then solder them again to save worries
If using even a little acid flux, better follow up with silicone grease on the connector.
Very Nice detailed video. Good Job!
Thanks for stopping by!
Experts will tell you that MC4 connectors should not be soldered. Period. Don't rely on this video.
Poor choice of tools
I used what I had and the cables are still in service. It worked just fine IMO.
@@DIYHomesteadProjectsDIYHP10 Great would it be an issue using 60/40 solder, I always prefer soldering connectors. But in solar panels dc voltages and current are to be respected I guess.