[gary]

Originally Posted by Somnium

Hi all,

this weekend i am looking to wire up the electrics of my observatory. i am going to get all the cable laid and then have an electrician just connect it up (to save a bit). i am running an electric gate opener, computer, mount (i want to be able to support a heavy duty mount for when i upgrade), camera, 1 light but not all at the same time. i have got some 16A circuit breakers for the sub panel i will be installing in the observatory which will service the power outlets and a 10A breaker for the light, i have also got a copper grounding rod. the observatory is about 30 mtrs from the main electrical panel. does anyone have any idea what cabling i should use for

1. the power cabling
2. the light cabling
3. the mains panel to the sub panel

can i use the same cabling for all 3? if so, what should it be?

finally, what circuit breaker should i use on the mains. i am sure 20A would be sufficient, but i have heard others just using 60A for any sub panel.

thanks in advanced for the help

Hi Aiden,

Just a reminder that the state of NSW does not allow for DIY electrical
work like you describe.

As the Department of Fair Trading warns,

Originally Posted by Fait Trading NSW

"it is an offence to undertake electrical wiring work without a licence or certificate. You can be fined $22,000 as an individual or $110,000 as a company for doing unlicensed electrical work."

See http://www.fairtrading.nsw.gov.au/ft...lectrical.page

Most states in Australia also have penalties that include imprisonment if
illegal work results in death or injury.

So given IceInSpace is a public forum in Australia and that people
are likely to reply in good faith but without the necessary knowledge
or qualifications, it might be prudent to talk to your electrician first
for further advice.

Best Regards

Gary Kopff
Mount Kuring-Gai
Member Institute of Electrical and Electronic Engineers 37 years.