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by remelad
Thu Jul 12, 2007 8:16 pm
Forum: Electrics Forum
Topic: How to measure Zs
Replies: 3
Views: 4734

Hi Sparx, thanx for the quick reply, although passed the part p course still have a lot to learn.through experience. I often read through the forum and see you are a member that gives out a lot of good advice (also blakey). Where would us mere immortals be without your sound advice most punters to t...
by remelad
Wed Jul 11, 2007 10:46 pm
Forum: Electrics Forum
Topic: How to measure Zs
Replies: 3
Views: 4734

How to measure Zs

Hi can anyone tell me how to measure Zs from a c/u, or is this measurement taken else where.I know how to do Ze and i know Zs = Ze+(R1+R2) its that i've noticed a requirement for this test to be carried out on the installation certificates. This is my first certificate that i have had to fill in,hop...
by remelad
Sun Jun 10, 2007 6:32 pm
Forum: Electrics Forum
Topic: Help in choosing mcb/rcd for power to garage.
Replies: 3
Views: 4000

Hi Sparx thanks for your reply i thought that was the case with the RCD, it was just the lecturer said that the mcb at the main c/u would trip 1st. As the 2 mcb,s are lower rated in the second c/u i couldn't see where he was coming from. Yes i know about registration. i'm planning to go wit NIC EIC ...
by remelad
Thu Jun 07, 2007 9:57 am
Forum: Electrics Forum
Topic: Help in choosing mcb/rcd for power to garage.
Replies: 3
Views: 4000

Help in choosing mcb/rcd for power to garage.

Hi am at college and have been studying part p. Have been offered my 1st job, to run power to a garage. S.W.A having been supplied by customer is 18 mts long 3 core 2.5. Im intending to run a further 10 mts in 2.5 t&e inside the main house to the consumer unit connecting to a 20 amp m.c.b. Insid...
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