Showing posts with label Electrical. Show all posts
Showing posts with label Electrical. Show all posts

October 10, 2011

Powering Up!

The first task on our heating list is to provide power for the boiler. Since this requires having our trusty electrician onsite, it makes sense to have him do the initial work to rewire the flat at the same time. This will require us to relocate and replace our old breaker box (also known as a distribution panel or a circuit breaker panel) with a new one - not only to meet the current building regulations, but because the old one is super sketchy! The breaker box is where the power comes into the flat and is then distributed to all the various areas - that's why it's a big job to replace and relocate it - there's a ton of cables going to and from it.

The existing breaker box (in the orange bag) with the jumble of wires going to/from it
The day started by meeting up with our electrician and going shopping. We ended up spending half the day getting all the electrical materials in Park Royal - an industrial area in northwest London with many supply houses. We went from shop to shop ordering the various components and comparing prices because we could not believe how expensive the cabling was - particularly the very heavy lines that were needed to carry power to the breaker box.

Eventually we made it back to flat - while I was rushing to frame the wall where the new breaker box will go, the electricians were removing the sub-floors, disconnecting the old power lines (after shutting off the power!), and running new the cables.
Disconnecting the old breaker box
The new heavy duty cables to relocate the breaker box - so much color!
Removing all the old cables & connecting the new ones
The new breaker box installed in the wall framing
Almost done rewiring the main lines
The old breaker box
The actual work at the flat went very quickly - we probably spent more time picking up the materials than rewiring the flat. In the end, the final result was a subtle red line that indicated the boiler had power. I had not realized the old wiring & breaker box was in such a poor state, but I now appreciate how much safer the flat has become - the new wiring and breaker box now meet the current building regulations which are very, very tough.  Without seeing firsthand the differences between the old and the new, it would have been hard to truly understand and appreciate.
The boiler with power (on the left); and the jumble of old wires gone

October 9, 2011

The Next Two Weeks...

So with our new focus on getting the heat working, that will be the goal of my next two weeks here in London.

It turns out that it's not just a question of getting the plumber here to finish his work - there are a ton of things to do before all the different parts of the system can become operational (déjà vu...). Each of those parts requires work that goes beyond the plumber - and so falls to yours truly.

One of the key issues will be to have the new radiators installed on the walls. The not so obvious problem here is that we don't have walls...yet. Well, not the final, finished ones, anyway. To get those up means hanging new plasterboard on the grotty old perimeter walls, plastering and painting - because once those radiators are connected to the plumbing we won't be able to get behind them ever again.

Initially, I had no inkling of how much would have to be done to get the heat working, but here's a quick list:
  • Rewire the entire flat with new electrical wiring and a breaker box - needed to power the boiler (and everything else)
  • Install the last section of the boiler's flue pipe (that vents to the outside)
  • Level the floor where the old kitchen used to be (one of the radiators goes there)
  • Order plasterboard, plaster, fasteners, etc. Then carry everything upstairs  :-(
  • Dry-line portions of the old walls with new plasterboard (a lot more work than it sounds!)
  • Spackle the joints of the plasterboard (for now, only behind where the radiators go)
  • Paint the plasterboard (also only behind where the radiators will go)
  • Finalize the heat calculations and sizing of the radiators - then order the radiators along with the valves and pipes
  • Hang the radiators onto the walls
  • Connect the radiators to the pipes along with the thermostatic valves
  • Fill and balance the system
  • Turn the boiler on!