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When you measure Ze, I understand it has to be at the origin. In this drawing I have the incoming service , then onto an isolator, then the main Db and 2nd and 3 DBs Would you take the Ze from the Main DB or from the isolator? All the other measurements are Zdb and the CPC ? would remain in...

UV Loght by studentspark posted 28 Apr 2020 at 12:03 PM This is a picture of it clear glass UV (Germicidal lamp)

I have an issue with a pond pump UV light What would you expect the resistance between line and neutrals pins on a 24W four pin UV 2G11 lamp to be. Many thanks

John W2 and EFLImpudence Thank you for all your help with this. I think I've got a good grasp of it...

I was told never to use bonding if the other side of the wall is an outside wall - use sand and cement. Only use Bonding if its an internal wall (for first fill) and no issues with damp. Bonding expands and bubbles up if its a damp wall.

Thank you guy so much for you help and patience on this So just to put some numbers in 0.56 ----------- = 0.62 0.62 x 230 = 143v 0.34+ 0.56 So a voltage of 143 volts will appear on the faulty metal part.(If measured between the neutral in...

Thanks again. Not sure what you mean that the drawing is the wrong way round. The values given were for the conductor sizes for the CPC and Line? I was trying to simplify the resistance paths Ze 0.20Ω, R1 0.34Ω R2, 0.56Ω. This is from the onsite guide Not sure what you mean here. The R2...

Thank you very much. I posted it last night, but it was waiting for moderation. I presume they like to check it when an image is attached? Im reading through your post now. Thanks again

Thanks for all your time and the replies, Ive given it some thought... But I totally understand if you want to give this one up as a lost cause.:) I am getting myself ties up in knots... Tv5 by studentspark posted 10 Feb 2020 at 7:01 PM So Well I took that example, and put in numbers that...

On the contrary, the conversation has left me.......scratching my head Indeed. I'm still working on it. Thanks

Thank you. I'll need to read it a few times. Really appreciate your help

If you don't mind, I would like to know, Thank you.

Ok thanks, I'll stop worrying about it(y)

It all adds up to O, Im struggling with Ohms law :(, Kirchhoff's Laws that one takes some grasping. Some night time reading thanks.

:) Yes sorry, This is a diagram I did my self, and there are a few mistakes in it. It helps me understand better, when I draw things out, but not anyone trying to decipher it... Im glad I've made one thing clear.:) Another drawing. Apologies for the mistakes in advance:whistle: TV3 by...