I remember some excitement (possibly on this forum, I really can't remember) about modular lights on different phases being fitted one the same metal ceiling grid - but not sure how likely this could be a problem.
Hmmm.I remember some excitement (possibly on this forum, I really can't remember) about modular lights on different phases being fitted one the same metal ceiling grid - but not sure how likely this could be a problem.
Well the atoms in the wires certainly get very excitedHmmm.
It is obviously in the nature of 3-phase installations and 3-phase equipment/appliances that all three phases very commonly exist in close proximity to one another within the installation, enclosures and connected equipment, so some people must spend a lot of time 'getting excited'.
Kind Regards, John
And some motors.some people must spend a lot of time 'getting excited'.
As has been implied, there are issues which have not been discussed.Of course we already have single phase on site but at present the cabling in question runs from 7 x 3 phase breakers to 7 machines. The replacement machines are single phase and thus, though we won't need the 2nd and 3rd phase wiring, we will need to do work at the consumer unit. ... In my layman's eyes, changing 7 breakers to single phase is a couple of hours work, not a day's labour.
We're not on about a DIY option but trying to estimate the work involved when it sure isn't a day's work, which is what we first got quoted.
Of course we already have single phase on site but at present the cabling in question runs from 7 x 3 phase breakers to 7 machines. The replacement machines are single phase and thus, though we won't need the 2nd and 3rd phase wiring, we will need to do work at the consumer unit.
In my layman's eyes, changing 7 breakers to single phase is a couple of hours work, not a day's labour.
Testing post installation is a given.
Is there anything in BS7671 that would prohibit what the americans call a "multi-wire branch circuit" where a 3 phase or split phase circuit feeds single phase sockets?In the current context, the one thing I would say is that if two 'adjacent' sockets are on different phases, they will inevitably be on different final circuits
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