I just happen to come across this discussion room and realized there are some questions regarding Cadwelding. Well, first of all, I would like clarify the terminology a bit. The process is actually c
National Electric Code (NEC) requires 8ft. Of soil coverage for ground rods. Meaning min legnth of 8ft of ground rod. _______________________________________________ See: http://www.mscomputer.com fo
Yes. As long as the metal is non ferrous. A few days ago, I observed two plumbers who were subcontracted to build and install some new hot water manifolds/valves for the heating system that serves ou
If you are using the tradition "shots" the starting powder is compacted at the bottom of the tube. You'll need to tap on the tube after you've poured the weld metal out so the starting material gets
Hi, Additional radials will always help. No detriment to this. However using brazed water pipes is not recommended. The brazed connections represent a seriously weak electrical joint and may fail pre
Jos, What you have is a "Counter-poise" grounding system. This is also an acceptable form of grounding. As a matter of fact, this is the type of grounding system most telecommunications companies use
Here's a little clarification for the different types of connections. IEEE Std. 80 recognizes the following maximum limits for the different types of connections. These limits are measured in Celsius
If the transient current is in the soil (lower potential) then it will not arc into the building (higher potential). Wilson Lui ATI Tectoniks wilsonlui@atitec.com If it were only that simple! Lightin
Couple of things to remember. Copper has 10X the conductivity of steel with comparable cross section. The item from Polyphaser is true to a certain degree. If your have a substantial tower (like a HU
What you needs to do is put in a couple ground rods around your house. Since this is a new construction, you may consider running a counterpoise around the structure, hook up a few ground rods on thi
Exothermic welding is unlike traditional welding where an electrical (Mig or Tig) arc is used. When it comes to welding copper conductors, a traditional weld or braze merely joins together the two su
You are correct. Cadweld, Exothermic, or One Shots ARE made for this purpose. They are the same thing. To clarify, Cadweld is a company, not a type of welding or product. Exothermic Welding, is a typ
Grounding does not prevent strikes. What a proper grounding system does do is allow for any lightning strike that does happen is condected safely into the surrounding soil and not arc through any equ
Exothermic welding material is NOT a Hazmat material. Whoever is charging you hazmat handling is pulling a fast one on you. Always light the weld metal with a flint igniter. Using a match greatly inc
That is correct. My apology for the misunderstanding. Cadweld is a brand by Erico, so is OneShots. Erico stands for Electric Rail Improvement Company and their first product was Cadweld. From there m
Flashing is too thin to weld with exothermic welding (cadweld). Recommend using sliver brazing or go with a thicker material. The steel inside the ground rod will almost be guaranteed to corrode when