If sleeving conductors at both ends, does it really matter which underlying conductor colour is being used for what?
Background is that I’m installing an electric boiler into a commercial building for a charity. The boiler is single phase, 12KW, 63 amps rated with 10mm conductors specified.
The DB is 3 phase.
The new installation will be professionally tested by a qualified professional as soon as possible after installation.
Due to having been donated a roll of 3x16mm SWA, that’s what I’m using from the 63 amp MCB in the DB to a rotary switch coupled to the boiler, with 10mm singles from switch into boiler terminals (because 16mm will not fit the screw terminals).
The 3-core is in new tri-phase colours. Therefore I’m questioning which I should best use for this single phase supply.
As I understand it’s preferred to dissociate the black colour from the old use as a neutral, I’d had that set aside as the earth conductor and sleeved accordingly.
That leaves me with grey and brown for phase and neutral.
Boiler is going to be running off the grey phase, but I understand the live will need to be sleeved in brown anyway? So what is likely to cause the least confusion?
Grey sleeved in brown as phase, and brown sleeved in blue as neutral?
or brown unsleeved as phase and grey sleeved blue as neutral? This is certainly simpler.
Am I just overthinking all this as the sleeving makes the original colours irrelevant anyway?
?
Thanks in advance...
Background is that I’m installing an electric boiler into a commercial building for a charity. The boiler is single phase, 12KW, 63 amps rated with 10mm conductors specified.
The DB is 3 phase.
The new installation will be professionally tested by a qualified professional as soon as possible after installation.
Due to having been donated a roll of 3x16mm SWA, that’s what I’m using from the 63 amp MCB in the DB to a rotary switch coupled to the boiler, with 10mm singles from switch into boiler terminals (because 16mm will not fit the screw terminals).
The 3-core is in new tri-phase colours. Therefore I’m questioning which I should best use for this single phase supply.
As I understand it’s preferred to dissociate the black colour from the old use as a neutral, I’d had that set aside as the earth conductor and sleeved accordingly.
That leaves me with grey and brown for phase and neutral.
Boiler is going to be running off the grey phase, but I understand the live will need to be sleeved in brown anyway? So what is likely to cause the least confusion?
Grey sleeved in brown as phase, and brown sleeved in blue as neutral?
or brown unsleeved as phase and grey sleeved blue as neutral? This is certainly simpler.
Am I just overthinking all this as the sleeving makes the original colours irrelevant anyway?
?
Thanks in advance...