Trench Back Fill - Ducting

[richo106]

Hi All

 

I am having to re-route my supply cable to the house to avoid the new extension etc

 

I have had western power out and i have now dug the trench and got some 50mm ducting for them to pull the cable through when they come to do the work

 

I have some of the electrical beware tape also

 

My question is do i need to lay sand around the ducting or is that just if the cable wasn't ducting?

 

Can i just back fill the trench with what i dug out?

 

It goes in the middle of my gravel drive way which will be landscaped etc next year when the build is done, the cable is 500mm down so it wont be interferred with but I want to make sure its done properly

 

Many Thanks

[joe90]

When I backfilled after the supply cable was laid I was going to use sand but was told as my back fill stuff was stone free not to bother!

[richo106]

OK Thanks, so even if i install ducting my back fill has to be stone free around the ducting?

 

Many Thanks