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Posted By Barry J
Is it really necessary to reverse the switch at the fuse box when changing these office lights?
Also, any tips on how to extend the life of these tubes as they dont seem to last long at all!
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Posted By Tabs
We have risk assessed this with the guys doing the work and established that there is virtually no opportunity to touch any live componentry.
This will of course, depend on the type of fittings you have in place.
Take a look at one on a bench (NOT connected to the mains) and see for yourself if there is a risk of touching terminals etc.
Do not guess though - see for yourself.
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Posted By GeoffB4
I know of one case where a fault on the fitting made the casing live and threw an electrician off his ladder. If he had isolated at the distribution box there would not have been a problem.
On the other side of it, there must be literally thousands changed everyday without a problem.
Although he must get awfully tired by the end of the day!
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Posted By Tabs
Geoff - you reminded me that we had a similar incident during a fit out. I have just looked at the risk assessment I wrote of, and sure enough, fitter must check with multi meter that casing is not live. I had forgotten that bit (I hope they haven't - I will check).
This raises a question ... how common is it that the casing becomes live due to faults?
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Posted By Barry J
Thanks very much for the responses. This helps a lot.
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Posted By Barry J
Also, does anyone know how to extend the life of the tubes? I have heard people say not to touch the glass with bare fingers as this reduces the life of the tube. This is quite difficult. If touching the tube happens, is there a certain substance to clean the tube?
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Posted By GeoffB4
It probably isn't common Tabs, but often enough to justifying that the fitting is isolated before changing lamps/tubes.
I used to work on building sites as a youth and remember well how electricians checked if there was power on light fittings - stick wet thumb in light socket!
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Rank: Guest
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Posted By Tabs
**SHUDDER**
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