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Today we are providing power for a small (25 stall) event at Ravensbourne on Level 4. For this event we were asked to provide power for 30 stalls and a few lights, all requiring hot power. Each stall was provided with 2 x 13A socket with enough power to run a couple of TV’s and Laptop’s each up to a maximum of 16amp’s per stall.
The events main supply was from a single 125A 3ph which was then split down to two 63A 3ph supplies, before being split down to individually protected 16amp circuits for each stall. This gave us plenty of protection against overloads as well as surges and faults. The system has fault protection at 3 levels before it tripped out the whole event, each 16A feed has its own RCD, each group of 18, 16A sockets had there own 63A 3ph MCB protection and the whole event had 125A 3ph RCD and MCB protection at supply and in distribution.
The bulk of the event was cabled using 6 way 2.5mm SOCA with Fan in’s and fan outs at each end, this provided an easy rig and de rig with only 6 SOCA’s being run out to the required locations, and only 3m and 5m 16A extensions to provide final distribution from the fan outs.
Each stall could pull up to 16A with out tripping the individual circuit , but if all 25 had pulled the full 16A, they would have tripped out the incoming breakers as the supply is only protected at 125A 3PH, but 25 stalls all at maximum load would pull 133.3A per phase. Due to the fact that most stall’s were only running a laptop and possibly a tv or small projector, this limit will never be reached, even if a few stalls do draw the maximum available.
During the event today we took some current readings on our main distro and each phase was so low it was unreadable on the meter and the meter’s range was from 50A to 200A.
Today also used the exact kit we have specified for the upcoming 3D Storytelling Conference in late March, and provided a useful insight into any problems we may come across when we rig the next event, in the same space.
Photos after the break:
PROJECT: 3D Storytelling Conference
0Over the last week I have had the opportunity to work on the world’s first 3D Storytelling Conference at Ravensbourne. The first couple of day’s I was just assisting with the rigging and gel’ing of over 300 lights through out the building. The design reason behind having to gel so many lights was to colour code each floor with the Conferences colour scheme, and I’m glad to say the end result was worth it, and the building looked amazing as you can see from the picture on the right.
Today and Yesterday, I was asked to help out on the hospitality side of the event, providing assistance to delegates and generally keeping the event running smoothly. Yesterday started off as a very cold morning stood in North Greenwich Tube station, in just a T-Shirt, providing directions towards Ravensbourne. The day got slowly better, as I came in after about 2 hours in the cold, to provide Wi-Fi Assistance up on the 4th floor. This new role gave me a chance to learn more about the Ravensbourne network and how to troubleshoot it’s problems on mac and windows.
Today was a bit better, and defiantly a lot warmer, started out in the Walker space as one of the 4 Hospitality team in there making sure the audience were in and out at the correct times as well as providing general assistance to lost delegates. Working in the Walker Space had a huge advantage over other locations as it meant I could see all the fabulous 3D Content that was on show and see how it was being used to portray released and up and coming stories. The walker space is pictured to the right.
At the end of today, as the delegates were networking over in Union Square, we started the de-rig and had the huge task of turning Ravensbourne back into a working uni.