I hate having a bad back.
Last night the PVC suit got it’s full public airing, first at the Devonshire Cat and then at Corporation.
The responses to it were amazing. Loads of people wanted to talk to me about it, and quite a few people tried the jacket on.
I know this is nerdy stuff, but today I encountered the highest PSC (Prospective Short-Circuit Current) that I’ve ever encountered on an installation.
23kA was the figure I found, with an external loop impedance of just 0.01A
So, why you ask am I sharing this?
Let me briefly explain.
All breakers have a maximum “breaking capacity”. It’s a number, usually in a box, on the front of the device. Most domestic ones are 6kA, industrial tend to be 10, 12, 15 or even 25.
If a short circuit occurs which takes the fault current above the breaking capacity of the breaker then the breaker may not actually trip, or it might fail, or the it may trip but the spark will then “hop the gap”.
So, what do we do in this circumstance?
Well we could protect the installation with BS1361 fuses, however, that is not guaranteed to get your 0.4 second trip time.
My chosen method is to put an MCCB (Moulded case circuit breaker) with a 25kA breaking capacity into the meter tails. Not only do you then get your 0.4s trip time, but you get a guaranteed trip at high PSC’s.
Yesterday was a very wet day. Storm Ali and Storm Bronagh sweeping in off the Atlantic.
First was Ali, on Wednesday; second Bronagh last night overnight (and indeed now whilst I type this). Both storms bringing with them wind and rain.
Yesterday however, the calm between the storms was nothing like. A band of rain pulled between the two of them sat across the country for most of the afternoon and evening and caused localised flooding and high rivers around Sheffield.
My usual 40 minute commute home from the site I was on took almost an hour and a quarter due to closed roads, queues, and some major floods.
Today should be a finer day, although there’s a loop out in the Atlantic which could twist up into another storm for Sunday to Monday.
Hannah is supposed to be going camping this weekend too. We’re not sure if that’s still happening.
SimCity has all but died as a franchise. The latter ones haven’t really caught the spirit of the early games; however, Cities Skylines is a beast of a game adding so much to the original ideas of SimCity and making for a very wholesome game.
It’s pretty much how Planet Coaster killed the Rollercoaster Tycoon franchise really. The original was the best, but the later games lost their way – especially the horrible Android abominations.
I’m hardly the perfect advocate, but you know when you see those photos online of before and after? Well these are mine.
It’s just over 12 months since I began my lifestyle change from an unhealthy fat potato with plantar fascitis & knee pain to become what you see on the right.
It was the photo shoot for the covers band on the left which horrified me. I looked disgusting! I was enormous and in an ill fitting suit which at the time I actually thought looked quite good.
Now I can shop at normal shops, delve into the middle of the rack, and when I see something really unusual like the PVC suit from ASOS I can actually buy it off the peg.
It’s not a diet that did this; it’s a lifestyle change. Less food, more exercise. For me it’s about the high fat foods. I now have them as occasional treats and only then as a small portion.
This photo was the shoot taken with my folk band a few weeks ago. The transformation is unbelievable!