No electrician worth his salt would insert/tighten/remove cables on a
live circuit unless he has a death wish.Therefore,he should switch off
the supply and check that the circuit is 'not live' before commencing
Why then do I see electricians screwdrivers and pliers which claim to
be 1000 volts fully insulated,or are these made purely for the idiots
Here's another one for you. Many moons back, my old chap used to do small
scale theatrical lighting. The dimmers were - galvanised buckets full of
salt water connected to 240V live.
Shovels connected to the bulbs. Dunk the shovels = brighter lights.
Safe as houses, the shovels had wooden handles :D
Good question. The 'leccy that did my extension added a new ring (spare
way in the CU) and swapped a type B MCB for a type C on the downstairs
lighting without turning the power off.
Due to a misunderstanding between him and my builder he only brought one
type C MCB 'coz he didn't know we have separate up- and downstairs
lighting circuits. He offered to cpme back and fit the other one but
asked if I was happy to fit it myself (to save hime making a 40 mile
rould trip) if he sent me an MCB. No problem - with the power off - but
now I'm wondering if I can/should do it live. The CU is an MEM
Memera2000 http://www.memonline.com/mem2.html (scroll down for a "cover
off" view). Having pulled the front cover off mine it seems I don't need
to get my fingers any closer than 50mm to the hot stuff. What do you
reckon? Should I do it live or not?
Rubbish. Brushing a suspect cable with the back of a finger is a well-proven
way to check whether it is live or not. Just make sure you're not standing
in an earthed bucket of water at the time.
It is an extra safety level, just in case the circuit you isolated isn't the
right one. I've worked on a 3-phase supply that I though was dead before
discovering that one phase had an extra connection to the incoming main. As
I was standing on 6mm thick rubber safety matting at the time, I didn't get
a shock, even though I was working on a brass terminal with an uninsualted
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.