Recent content by JGH1948

Thank you all for your advice. I haven't had a chance to check but I don't think its a TT because it's a relatively modern block in a town. I haven't seen the isolator - the lady just read off the rating over the phone. I'll get pix next week when I check it all out myself. Certainly if it is...

I certainly do. Sorry posting on the run.

I'm changing the CU in an elderly lady's late 1970s flat from an old four way wire fuse board to a 10-way split board with one side protected by an 80mA RCD and want to keep down the costs for her. The old board is currently protected by a separate 500 mA RCD isolator which old but works fine. I...

Yes - it was just a standalone RCD which is fitted between the meter/cuttoff switch and the CU (from www.tlc-direct.co.uk) plus you have to buy a box for it. For a pre-assembled, 6+6 Split Load Consumer Unit with 10 x Type B 6kA SP MCBs. BS EN 60439-3: 1991. 100A DP isolator, 63A 30mA RCD; 1...

They certainly are a little expensive - around £69. Many thanks for the advice.

When a property is supplied by a TT system with its own earth electrode should the 100mA RCD cover all circuits including lighting or just the socket rings?

A good site for calculating cable sizes - not taking into acount diversity is: www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html.

Many thanks.

I'm powering up an outside office and greenhouse heating and have established I need a 10mm SWA for the load and distance from the house to the locations. Inside the house I plan to run 10mm twin & earth from the consumer unit to the wall where it meet the SWA. What would be the best...