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James Wilkinson Sword[_4_] James Wilkinson Sword[_4_] is offline
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Default How much current flows through pylons?

On Sun, 19 Mar 2017 08:54:52 -0000, The Natural Philosopher wrote:

On 18/03/17 12:05, NY wrote:
200A per phase at 400V (240V phase-to-neutral) doesn't sound very high.
We have a 60 A "company fuse" and I presume our neighbours do too. With
an electric fire (3 KW), an electric shower (maybe 8 kW) and an electric
oven and hob (maybe 6 KW), you'd be getting towards that limit but still
remaining legal. Now imagine lots of people roundabout doing that. It
doesn't take many houses to run up 200 A - or a total of 600 A across
all three phases. How many houses are typically fed from a single feed
from the substation or 11 kV-to-400V pole-mounted transformer? What is
the average current that is assumed per house when sizing up the number
of houses that can be fed from one substation circuit? I presume it not
the full 60A of the company fuse rating.


Course not. Average power per household is 1-2KW.


Continuously? That's way too much. Think what your bill would be.

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