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At least it complies with the 3mm disconection gap !

why not fit a switched fuse outlet CJS

Thanks for the replies, went back yesterday and they were still tripping the RCD's during the day. Found out that UK power are replacing the transformer for a larger one, and when we spoke to them they said that the house is on the end of the supply and the present transformer is no longer gig...

Ok not been on for a while kept saying password was wrong, so here you go help me out with this. 2 c/u, each has its own RCD 30 mA, connected to one supply at the origin system is TT. Today on several occaisions the RCD's have tripped and some times both together at the same time. The system...

I would give it a Code 1, But it depends on the system as if it,s TT what Code would you give it then would definitely be Code 1 just my thoughts

This is my point exactly, but this morning was told that the BRB as said in a previous post does allow it , and I have been over ruled but thanks for the replies CJS

This is my point , which is why I want another opinion , as I said if we were to put a 63 Amp 3 Phase MCB instead of main switch or a 100 Amp Fused Isolator before the Consumer Unit it would be OK.

OK guys need some advice. Scenario 400 Amp 3 Phase head supplying 3 Phase isolator, Supplying a 3 Phase buzz bar. All this is connected with 150mm Cable so no problems here, The issue is there is a 24 way 3 phase consumer unit connected directly to the buzz bar with 25mm Tails, Does the...

Have you looked at lutron, dont know if they do 8 zones know they do 6 and can be contolled from 4 points CJS

I fly Radio Control models mainly Helicopters, have raced motocross but had to give it up do to work commitments would do it again tomorrow if work wasn't an issue.

The Emergancy lights should be wired through a key switch in such a way that you can test emergancy lights and still have normal lighting live CJS

If you are not sure which connections to terminate on? Use your continuity meter on terminal marked common © and either terminal (1) (2) Turn the dial on the cylinder stat to a higher setting and you should get continuity on the terminal that will call for heat, turn the dial down and you...

Multiply MCB tripping current by rating factor ie. Type B X 5 Type C X 10 Type D X 20 Divide 230 Volts by result Then multiply by 0.8 for correction factor. B 6 Amp 60898 MCB 6X5=30 230/30=7.67 7.67 X 0.8= 6.14 ohms Maximum Zs 6.14 ohms corrected Hope this helps CJS

Glad to here its working hopefully when all the heating is shut down and you turn the pipe stat down the valve and only the pump will run CJS

Ok it should work this time let me know how you get on CJS

The last diagram i have drawn will allow the pump to run when all the heating and hot water is shut down, via the pipe stat allowing heat to be dissipated. You need a zone valve to open either the heating or hot water valve, other wise the water has nowhere to flow and this will cause the pump...

Sorry about that Geejay after looking at my diagram I can see it will not work, Your problem is that you will need to open a valve to let the water flow as you can't pump against a dead end. I have attached another diagram which should work but you will need 2 relays, I have shown it opening the...

Hi Zs readings are required to be met to ensure that the circuit will disconect within the specified time in the event of an Earth fault,(TNCS / TNS 0.4seconds for circuits upto 32 Amps and TT 0.2 seconds for circuits upto 32 Amps ) and not in the event of an overload on the circiut. If you have...

This should work you will need an 8 pin relay with base and an enclosure to mount it in CJS

Connect the pump via a relay take permanent live or live from time clock when time clock switches of to pipe stat, switch wire from pipe stat through A1 (2) on relay and link to N/O (3) of relay, connect pump to corresponding terminal of relay (1), then connect original wire to pump to N/C...