How do I connect underground PVC pipe holding wire to rigid conduit?

Question

I am planning to add a (GFCI) receptacle on a fence post, which is 45m from the garage (power feed). I plan to use NMWU 12/2 cable run in a PVC water pipe (or flexible cable protector) and the risers at both ends will be rigid PVC conduit. I plan to use 12ga to allow for future extension down the laneway (100m or so). The 45cm-deep trench will be dug with a mini-ex in an area with no vehicle traffic. I live in southern Ontario.

Question: How is the wire from the ends of the pipe to the conduit to be protected? (Do I leave it with a small loop or wrap it in something?)

Edit: I found a source of flexible PVC electrical conduit, so I can use it and connect the ends to rigid conduit. (This sort of obviates my question, though.)

Answer 1

First, apologies for leaving this question for so long and thank you for your comments.

In the end, I used flexible PVC conduit. I could have used rigid conduit, which was less expensive, but decided against it as there were too many elbows to glue (and not all the turns were 90 degrees). With the flexible conduit, there was only one junction to glue in the middle and the elbows at the end.

Answer 2

usually conduit is used (rigid plastic or metal conduit) not pipe.

Pipe can be used as conduit (if it meets the physical requirements of conduit) but you'll need to find an appropriate coupling to join your pipe to regulatr electrical fittings.

It may be possible to flare the pipe by heating it until soft and then placing something in the end to stretch it thus allowing you to join it to some rigid conduit, from there you can use conduit bodies etc, or you may find a pipe that is a good fit in a conduit body, or use a pipe flange to join the pipe to a junction box etc...

Be sure to follow the regulations for burial depth and buried markers.