calculations as edd book
TRANSCRIPT
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8/17/2019 Calculations as EDD Book
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TDL=150 KVA as a maximum load of each feeder pillar
In (Design Current) =
√ =
√ = 21
Power=150 kVA, V= 400 Volt
It =
C g = 0.59
Groups Factor from Table 2.4 EDD Section 14
Assuming Cables Laid touching each other as wors
And 5 circuit cables laid together as Installation M
C d = 1.00 Depth Factor from Table 4B4 BS7671:2008 IET Wir
Assuming the Depth is 0.7 meter.
C a= 0.89
Ambient Temperature Factor from Table 2.4 At 50° C and XLPE Cables.
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
It =
=
.
. . .=
.
. = 412.392
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐From Table 2.11 of (XLPE Cable Current Carrying Capa
240 mm 2 Cable Current Capacity is 435 A ˃ 412.392 It
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