this is a long standing and often recurring argument we have at work...
we make large commercial air-con units that are 3 phase and are wired accordingly in the proper colours..
however, we often include an RCD socket for the commissioners, and interior lighting..
these are single phase obviously and are wired from the control panel..
they are not always on the L1 ( brown ) phase.
the regulation regarding identification of colours for circuits is the cause for the argument..
one side says that the circuits should be wired in the correct phase colour.
the other side says that since they are single phase, it doesn't matter what phase they are on and should be wired in brown to indicate 240v ( obviously blue for neutral )
where we have mixed single and 3 phase into the same terminal box ( such as for the compressors and their crank case heaters ), we do identify which phase the single phase is on.. this is because there exists a potential for 415v phase to phase..
anyone got a view point on this?
we make large commercial air-con units that are 3 phase and are wired accordingly in the proper colours..
however, we often include an RCD socket for the commissioners, and interior lighting..
these are single phase obviously and are wired from the control panel..
they are not always on the L1 ( brown ) phase.
the regulation regarding identification of colours for circuits is the cause for the argument..
one side says that the circuits should be wired in the correct phase colour.
the other side says that since they are single phase, it doesn't matter what phase they are on and should be wired in brown to indicate 240v ( obviously blue for neutral )
where we have mixed single and 3 phase into the same terminal box ( such as for the compressors and their crank case heaters ), we do identify which phase the single phase is on.. this is because there exists a potential for 415v phase to phase..
anyone got a view point on this?