M
matthewbutt
Hi All,
Firstly I hope this finds you all well. A quick question for an installation I need to order for tomorrow, I am not the electician but we are ordering the kit and I don't really fancy calling him on a bank holiday!
We are installing a large computer UPS which requires a 3 Phase 160A connection. The electrical intake room has more then enough capacity, thankfully, but just to double check that 50mm 4 Core SWA is the correct size for the job.
The cable run is ~33M, tied to cable tray, 30 degrees average temperature and I have included a 5% voltage drop. Would you calculations tie up with this?
Also I have been reading huge levels of debate on whether to use the armour as a CPC, purely out of interest is the safest method to run a seperate 25mm earth alongside the SWA as well as earth the armour? I feel I might be at risk of starting a debate here
Thanks in advance for your time on this and I look forward to hearing back from you.
Kind regards,
Matthew
Firstly I hope this finds you all well. A quick question for an installation I need to order for tomorrow, I am not the electician but we are ordering the kit and I don't really fancy calling him on a bank holiday!
We are installing a large computer UPS which requires a 3 Phase 160A connection. The electrical intake room has more then enough capacity, thankfully, but just to double check that 50mm 4 Core SWA is the correct size for the job.
The cable run is ~33M, tied to cable tray, 30 degrees average temperature and I have included a 5% voltage drop. Would you calculations tie up with this?
Also I have been reading huge levels of debate on whether to use the armour as a CPC, purely out of interest is the safest method to run a seperate 25mm earth alongside the SWA as well as earth the armour? I feel I might be at risk of starting a debate here
Thanks in advance for your time on this and I look forward to hearing back from you.
Kind regards,
Matthew
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