wire guage simple question

[Soundguy]

Allow me to clarify a loosely worded exposition... I use copper tubing to make my own splices and terminals for use while soldering on automotive type DC circuits, certain solar photo-voltaic systems (not connected to a residence) and other places (ham radio and experimental setups etc) where there will never be a fire underwriter's slightest interest.

Pat

I've used that trick too.. makes great 'large' ring terminals for solenoids.. hammer it flat and drill it out.. heck.. i sometimes even trip the ring terminal end roundish so it looks good..

de Ke4rrd

73's

soundguy

 

[eepete]

Yeah, well, thread drift can be part of the fun and education.

Re: Does civil engineering count (from another thread, cross thread contamination). I was taught that ME and CE'e work together to build targets, and EEs make the control systems to blow them up. :laughing:

SK de WA1YYN

 

[BrentD]

Is is cheaper than a decent PEX crimper and I wish it could be fitted with dies for crimping PEX fittings. It will fit into smaller spaces than my PEX crimpers and would be easier to squeeze.

I've never seen a PEX crimper, but from looking at the tool and the dies, it doesn't look like it would be all that hard to machine a custom die. Maybe take a PEX crimper and the hydraulic crimper with a couple of dies to a machine shop and ask if they can make a PEX crimping die for the hydraulic crimper.

 

[patrick_g]

I've never seen a PEX crimper, but from looking at the tool and the dies, it doesn't look like it would be all that hard to machine a custom die. Maybe take a PEX crimper and the hydraulic crimper with a couple of dies to a machine shop and ask if they can make a PEX crimping die for the hydraulic crimper.

I have both the hydraulic wire crimper and a couple PEX crimpers and for 1/2 inch or larger PEX I think the reverse of what you said is more likely. The hydraulic wire crimper doesn't have the open jaw clearance to deal with larger PEX but some of the PEX crimpers could be made to crimp wire connections (probably.)

OF course having the dies custom made at a machine shop would cost way more than buying the tools to do the jobs.

Pat

 

[captaincrab55]

Allow me to clarify a loosely worded exposition... I use copper tubing to make my own splices and terminals for use while soldering on automotive type DC circuits, certain solar photo-voltaic systems (not connected to a residence) and other places (ham radio and experimental setups etc) where there will never be a fire underwriter's slightest interest.


Pat

Let's leave it at that..

Tom

 

[Soundguy]

Yeah, well, thread drift can be part of the fun and education.

Re: Does civil engineering count (from another thread, cross thread contamination). I was taught that ME and CE'e work together to build targets, and EEs make the control systems to blow them up. :laughing:

SK de WA1YYN

I've heard a slightly different bend on that one.. CE's build the targets that the toys built by ME's take out. I guess you can now add inthe EE's targeting system.

Probably somewhere burried in there is a chem-eng. for the HE in the shell that goes boom..


soundguy

 

[patrick_g]

I've heard a slightly different bend on that one.. CE's build the targets that the toys built by ME's take out. I guess you can now add inthe EE's targeting system.

Probably somewhere burried in there is a chem-eng. for the HE in the shell that goes boom..


soundguy

Don't forget us guys who developed the training for the weapon system maint guys and the training for the pilot, gunner, or whoever could properly deploy the weapon.

Pat (Our team did training stuff for Tomahawk, UAVs, JDAM, JSOW etc.)

 

[Danno1]

I don't think that there is ANY flux in flux cored solder that is approved for electrical connections that is corrosive.

Some RTV puts out acetic acid on contact with the moisture required for a cure. Once that is dissipated there is no residual problem. Wire, even multi-strand, properly tinned, should be OK unless the RTV application is out of control. If in doubt, use a different sealant. I have on occasion put shrink over a splice and then placed a second piece of shrink over that but with silicone inside the second piece. No silicone to copper contact so the evil acetic acid doesn't get a shot at the copper but the joint is waterproof.

With the easy availability of heat shrink tubing with the heat melted inner coating of sealant or the waterproof butt splices (even Harbor Freight sells them) there is not much need for silicone seal to waterproof a connection.

Pat

There are electrical grade RTVs avail that don't contain acetic acid.


.

 

[jlrsn]

There are electrical grade RTVs avail that don't contain acetic acid.
.

As explained by patric_g and Dannol, Never use acetic acid cure room temperature vulcanizing (RTV) Silicones as a potting material, on electrical, or on non-ferrous metals (especially aluminum).

I've used non-acidic RTV Type Sealants for years in the Aviation Industry. If in doubt smell the sealant and if acidic you'll smell the vinegar odor of the common acetic acid cure products.

RTV silicone made for non-corrosive electronics applications uses an alcohol curing system rather than an acetic acid curing system. The alcohol cure products have a slightly sweet or ethereal odor as opposed to the distinctive vinegar odor of the common acetic acid cure products. Both are one part curing systems that depend on air moisture to cure into silicone rubber.

Examples of non-corrosive RTV Silicones are: clear or gray Dow Corning 3145; white General Electric RTV 162 or gray high strength RTV 167; and clear Loctite 5140.

What has always bugged me is how many of the aviation retail sales outlets show DC632 as the silicone that should be used by every aviation mechanic and it is very acidic!

Jim

 

[patrick_g]

There are electrical grade RTVs avail that don't contain acetic acid.


.

Right on Danno, sort of. The RTV doesn't actually contain acetic acid but acetic acid is produced by chemical reaction with moisture (part of the normal curing of that type RTV.)

Oh, and of possible interest to RTV users, infohaulics, Jeopardy player wannabees, and the like... RTV stands for Room Temperature Vulcanizing (as in vulcanizing rubber, which prior to the development of RTV required elevated temps.)

I have used the "vinegar smelling type" to repair an aquarium. You wait a while and put in a few baby guppies (easy to come by in the hundreds) and if they die you wait a while longer, change the water and try some more baby guppies. (Lather, rinse, repeat) until your little aquatic canaries survive and then it is safe to change the water one more time and repopulate the aquarium.

Pat