Sunday, 13 January 2013

How did we manage that?

Last week was a good week and quite a lot was achieved. First up, I made a start on the wiring and was helped by Tex and Kieth, who is now working with/for Tex. We started in the North Wing, which took two days to get everything done with three different types of circuits. AFCI (Arc Fault Circuit Interrupter) protected circuits (blue 14/2 wire) for the bedroom receptacles (sockets for UK readers) onto which we also put the bedroom lights, not because they have to be AFCI protected but simply to save wire, of putting a different circuit in just for them. We put in five baseboard heater circuits (red 12/2 wire) with one heater per circuit and finally three regular circuits for all the main room receptacles and lights, two of which are on three way switches.

These are not very exciting photos but, they do give you some idea of what is involved. The reel is mounted just for ease of unrolling the cable from it.

The first step is to decide how many of each different type of circuit is required in the area you are wiring, with a mind to how the hidden wiring is going to be routed. Then for each circuit in turn decide what type and where the boxes are required. If you look carefully, at the bottom of the wall in the foreground of this photo, you will notice two boxes facing inside the bedroom (far side of the wall) served by blue 14/2 cable indicating they are on an AFCI circuit and two boxes facing into the main room that are served by standard white 14/2 cable. Note also the red 12/2 cable coming up from below to provide power to a baseboard heater that will go between the two receptacles. As far as the building regulations are concerned the baseboard heaters will be the primary heating system in this part of the house and the wood burning stove will be the backup system. In practice it will be the other way around. If you were paying attention, I have already told you this.

There are generally four different types of boxes - receptacle boxes, light boxes, switch boxes and junction boxes. At this stage of the process most of them look the same but, their positioning, wiring and covers are all different and often restricted or guided by the electrical code. Plastic or metal boxes can be used and I have used a mixture of the two depending on where a box goes and what its function is.
I also connected the sub-panel to the main panel using a very heavy duty #3 cable. The sub-panel is now quite full and I am planning to put only another three circuits onto it. The wiring system here is very different to the UK but, it makes a lot of sense and despite the heavy code requirements is not difficult to grasp. Like all the building trades here, the system is designed for self builders like myself to be able to do it with the aid of good guide books and a rigorous inspection system.

Remember this from last week well, ….

…. it now looks like this. Note the really heavy duty cable on the left of the photo. This is the #3 cable bringing power from the main box in the basement. Note also that each cable is labelled and there is a table on the box cover plate, that hides all the wiring, that also indicates what each circuit is for. If you look carefully you may be able to identify the AFCI breakers. They are the three breakers with white coiled tails and white labels. They are wired differently with the neutral wire coming back directly to the breaker before going onto the neutral bus bar. Arc faults are therefore detected by the breaker before the circuit is completed thus reducing the time it takes to cut the circuit down to about 4/100 of a second. 
We also managed to do the wiring for the main bathroom, number 2 bedroom, the utility area and the garage. Three more circuits are required in these areas but, as they are circuits that require specific heavy duty wire, which I don't have yet, they will go in later. They are for; the dryer which has to be on its own 240 volt/30 amp circuit; the oven for the main kitchen and the range for the kitchen in the North Wing, each of which require their own 240 volt/40 amp circuits. All three require 2 pole circuits, if that means anything to you.

The main bathroom and number 2 bedroom. Again, you can see the white wiring for the bathroom and the blue for the bedroom. The receptacles in the bathroom will be GFCI (Ground Fault Circuit Interrupter) protected. This can be done at the receptacle itself or by a GFCI breaker in the panel. The former is the cheaper method in most cases (where there are only a couple of receptacles).

Most of the garage fixtures I have placed on the beam. This will keep the wiring from under the feet/car/larger bench tools and provide power to the lights. You can also see here some of the hidden wiring for the North Wing rooms above the garage. Eventually most of what you see here will be covered by the white board ceiling of the garage. Note the conduit for the wiring which is required to protect the bare wire.

At the workshop end I have put plenty of outlets. From left to right; standard double 110 volt/15 amp receptacle, split 110 volt/15 amp receptacle with top half controlled by a switch for the florestant light that will be plugged into it, the bottom receptacle will be live the whole time; standard double 110 volt/15 amp receptacle; Single 240 volt/20 amp receptacle for my UK power tools; and finally, another standard 110 volt/15 amp double receptacle. Got that, questions at the end.

Conduit and box for switch for light above garage entrance.
Not the garage entrance light but, recessed light above entrance to main cabin from the garage. This is controlled by three way switches in the garage and the threshold of the main cabin.
We also got some work done on the stairs to the upper level. I was going to install them today but discovered a little more work needs doing on the platform first. The bottom of the platform is at the right level but the top needs to be raised 3" - how did we manage that? Anyway, I have worked out a couple of ways we can do it without having to take it all down. I will discuss them with Kevin tomorrow.

Two views of the platform for the stairs up to the top floor.

It won't take that long to raise the top of the platform 3". I might need to buy some more wood to do it but it will be cheaper than starting again. The bottom of the framing has to stay at the same level in order to support the runners - bottom left of photo.
Last night the temperature dropped to below -20c and it froze the pipes under the cabins where I am staying. Kevin and Tex were away for the weekend at a game (animal) show in Pincher Creek in Alberta and so Keith was up nearly all night trying, in vain, to keep everything going. Even some of the lines in the main house froze. Luckily, everything is now back on line, thanks to Keith, so I got my weekly wash done - sad aren't I. I always keep 10 litres of water in a plastic can for just such occasions and so at least I had something to drink when I got up this morning.

There will not be a blog next week. I am going back to the UK on Wednesday for a week to see family - a late Christmas. I will post again in a fortnight - 'quinze jours' for my French friends, पखवाड़ा (Hindi) or پھواڑے (Urdu) to my friends in India, whoever you are.


1 comment:

  1. You're welcome to the wiring! Looks like something I hope never to lay a hand on. Sending you e-mails ( to advised address ) but no reply. Is your e-mail machine operational? Possibly a wiring problem? Or blown fuse?
    Matt

    ReplyDelete