will be installed under supervision of qualified electrician! just trying to understand something that no one appears to teach! wish to learn in the sensible manner of asking questions and hopefully getting answers!
ok, understand loop in/out. now i want to upgrade board to 17th dual rcd and install main earth bonding to gas and water as there currently is none now,also would like to install smoke and heat alarms. is this a tns system or tt?
will post pics asap, new to all this so need to work out how to upload pics from i phone!! would it be acceptable to test ze as tns and remove rod if results are good?
can someone explain why my service head has two incomers? and why what appears to be a tns system has a rod outside connected via 10mm direct to db?
thanx lads