A new guide to specification of Flexible Electrical Conduit Systems has just been published by Adaptaflex. It will assist in the understanding of exactly which conduit systems should be used in particular electrical installations.
Learninglounge.com has produced a video that draws together all the cable selection elements from the regulations and provide practical examples of how they are applied to the selection of cables. Watch a preview clip!
The latest FMB survey reports that although the rate of decline in SME workloads eased to its slowest rate for a year, construction workloads continued to decline in the third quarter 2011. Interestingly the strongest improvement was in the public new build sector. Read more in this month's Construction Market Activity.
I have a three-phase installation with maximum current demands of: Brown - 285.92A, Black - 361.52A, Grey - 285.92A.
What I plan to do is work out the kVA based upon all three phases at 285.92A ( 10% for future), and then work out the kVA for the extra 75.6A on the black phase ( 10% for the future), then add the two kVA readings together - as so: 3 x 230V x 314.5A divided by 1000 = 217 kVA.
230v x 83.16A divided by 1000 = 19.1 kVA - giving me a total kVA for the installation of 236.1. Does this look OK?
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