Some of them actually have a ceramic coating. From: Jaime Solorza Sent: Monday, September 28, 2015 9:00 AM To: Animal Farm Subject: Re: [AFMUG] Grounding strategies for water tanks
very important issue but overlooked is when grounding to tank rail is that you make a good bond with metal and not surface of rails. The paint and coating used on many of these tanks are thick and will basically "float your ground point". So make sure what procedure is allowed on tank, Some of those coats are to keep rails from rusting. We drill through and scraped off paint so we have metal to metal contact then we use cold galvanized paint to cover exposed areas. Jaime Solorza Wireless Systems Architect 915-861-1390 On Mon, Sep 28, 2015 at 8:40 AM, David <[email protected]> wrote: Its not though none of the tanks I have seen that has never had any com gear has a good ground. If its a cylinder tank and not a ball tower most of those are sitting on reinforced slabs that do not have any grounding and the pipes are coated with industrial environmental paint which makes for a good insulator. Unless you see a huge ground lug connected to EARTH GROUND of the MAINS I would not depend or assume a good ground :) On 09/28/2015 09:35 AM, Jay Weekley wrote: My assumption has always been that the tank would be fairly well grounded due to all the steel pipes in the ground leading to and from it but that would be a great question for the experts. Josh Baird wrote: We are going to be installing on several water tanks that do not have any other carriers on them. I'm assuming there is probably not a ground ring or system in place at these sites. The electrical service is likely grounded independently using a ground rod at the pole. These sites will have batteries and a charger at the bottom and fiber/DC up the tower. Admittingly, I'm fairly (ok, very) stupid when it comes to grounding systems. I understand that everything *should* be bonded together. However, if the tank it's self doesn't have a sufficient grounding system already in place, what is the best strategy here? Thanks, Josh
