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Discuss wiring practice with industrial installations. in the Commercial Electrical Advice area at ElectriciansForums.net

C

chris07

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Im a electrician, and work in domistic installation.
I've been ofered the job of rewiring a office building on a power station, when i've looked at the old installation the old lighting circuit has been partly removed and seams to have been wired as a lighting ring circuit with 2.5mm twin. Is this the normal wiring practice with industrial installations.

Cheers
Chris
 
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S

Shakey

  • Thread Starter Thread Starter
  • #2
Absloutely not!!!!!!!

Only ring allowed is normal BS1363 socket outlet ring main, and CPC as a ring on a radial BS1363 circuit with high protective conductor currents.

definitely not lighting, industrial or otherwise.

good luck with the job
 
S

Spudmiester

  • Thread Starter Thread Starter
  • #3
Definitly shouldnt be a ring, but 2.5 may have been used because of voltage drop if its a large circuit or a long way from the DB. Possably 2.5 could have been spec'd for lighting circuits as some health authauritys I have worked for do this. 2.5 for ANY lighting circuit and 4 mil for sockets. I dont know how they expected someone to get 3 lots of 2.5 in the terminals of a light fitting though!
 
K

KEVINDOE

  • Thread Starter Thread Starter
  • #4
I have come across lighting circuits done in rings , twin and earth, loop in system, 1mm, on a newish property, i was dong a p.i.r at the time, confused.com !!!
 
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