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External plumbing for the pool

500mm + trench for electrical conduit
With the concrete pool to cure for 28 days, there's some time for the external works because nothing can happen within the pool itself.

We needed to provide an electrical connection from our house switchboard to the location for the filter. This required digging a 500mm+ trench, which is a difficult depth to achieve in a narrow trench. We had to dig this before the external plumbing for the pool was put in place, at a shallower depth, along the narrow strip between the fence and pool.

I dug the first section before the pool was laid, as described in this post.

The electrical conduit has to be at least 500m deep, then have 100mm of cover and a electrical warning tape place in the trench. To save a few dollars I spent a day and a half of a weekend digging the trench, for our electrician to lay the conduit in during the week. Despite being winter, there was only light rain and I was saved from having to shovel out any sand that washed in, although the sand collapsed in a few places.

As we've found elsewhere in the garden I came across buried rubbish that I could dig around, as well as a cluster of large tree routes that necessitated diverting the trench.  The fridge that was buried in the garden was removed during the excavation of the pool.

Pipes for the filtration, solar hot water, low voltage electrical, hot and cold tap water and rainwater are in the one trench.
After our electrician ran the conduit along the trench I laid three water pipes using poly pipe I picked up at Bunnings. I ran two from our instant gas water heater to the back of the garden for a future tap and outdoor shower, and one from the front of the house to the same place for a planned rainwater tank.  I thought that one day we will have a rainwater tank, and to be able to  top up the pool with rainwater would be handy.

The pool company's plumber then laid the pipes around the pool for the filtration equipment and solar heating, as well as conduit for low voltage electrical cable that will go to the roof for the solar heating. This happened during the day while I was at work, so I had to dig a shallow hole to see how it was laid out.


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