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by zygo
Wed Apr 16, 2008 12:31 am
Forum: Electrics Forum
Topic: Running 2 transformers off 1 switch: tripping
Replies: 3
Views: 3389

Thanks, Sparx. I am able to follow the logic (though maybe not the maths!) and it is inkeeping with what I suspected. My original design was to run two circuits on two switches but I decided to combine them and use the second switch for something else. so it was not too difficult to go back to the o...
by zygo
Tue Apr 15, 2008 4:21 pm
Forum: Electrics Forum
Topic: Running 2 transformers off 1 switch: tripping
Replies: 3
Views: 3389

Running 2 transformers off 1 switch: tripping

I have just installed a low voltage halogen lighting system in my converted office - the type that uses flexible cable tracking suspended from the ceiling. From the twin track hang five 12v 20W MR16s (in parallel). The track is powered by a heavy toroidal transformer. The supply is taken directly fr...
by zygo
Wed Apr 09, 2008 11:57 am
Forum: Electrics Forum
Topic: Garage conversion - installing a secondary Garage CU
Replies: 9
Views: 15491

By the time you read this, ericmark, I expect you will have your results. I hope you passed (I can be your first customer!). The small CU is now in place, connected by exposed internal T+E cable to a 40A MCB on the unprotected side of the main CU. All is well. The earth to gas pipe is a bit of a wor...
by zygo
Tue Apr 08, 2008 11:16 am
Forum: Electrics Forum
Topic: Garage conversion - installing a secondary Garage CU
Replies: 9
Views: 15491

I fear that I might have misled you - my apologies. The garage is attached to the house; it is a double length - tandem - garage. There once was a four way fuseboard inside the garage (on the wall that divides the garage from the house), earthed to a 22mm copper pipe (I have just re-checked and it's...
by zygo
Tue Apr 08, 2008 8:57 am
Forum: Electrics Forum
Topic: Garage conversion - installing a secondary Garage CU
Replies: 9
Views: 15491

First and foremost, ericmark, good luck in the exam! And secondly, thanks for the July 08 warning. If I read this correctly, however, I won't be affected by it. As the existing main CU is in the garage, and the small one I want to install is also in the garage, the cable linking them will be surface...
by zygo
Mon Apr 07, 2008 9:52 pm
Forum: Electrics Forum
Topic: Garage conversion - installing a secondary Garage CU
Replies: 9
Views: 15491

Thanks for this piece of good advice.

I am already dealing with BC as the conversion requires me to make a Building Notice. Heance the cost is not an issue. But I'm glad the general approach I am making is on the right lines.

Any other observations, anyone?

Zygo
by zygo
Mon Apr 07, 2008 3:39 pm
Forum: Electrics Forum
Topic: Garage conversion - installing a secondary Garage CU
Replies: 9
Views: 15491

Garage conversion - installing a secondary Garage CU

My first post - so of course I need help, please :D My situation is not unlike some previous postings but there are special factors so hence this new topic. I am converting the rear half of a double-length garage into a study/den. The main consumer unit for the house was installed about four years a...
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