Electrical Cable Installation in Ceiling Void

[andre1809]

Am I allowed to run a single phase 16mm x 3-core unarmoured cable in my house'e ceiling void, between my main distribution board and a sub distribution board?

I am reluctant to use an armoured cable since it is so unyielding to work with in a confined space.

 

[B-1]

It needs to be double insulated and the breaker needs to be correct for the cable/distance but it doesnt have to be armoured.

 

[andre1809]

It needs to be double insulated and the breaker needs to be correct for the cable/distance but it doesnt have to be armoured.

Cable will be a 16mm square 3-core of 26-28 meter length, running in a steel trunking in the ceiling void. Cable will be double insulated, with a 50 Amp breakers in both distribution boards. Main distribution board has an 80 Amp mains breaker. 16mm Square can handle up to 83 amps continuoustly.

Just needed affirmation thanks.

 

[B-1]

Cable will be a 16mm square 3-core of 26-28 meter length, running in a steel trunking in the ceiling void. Cable will be double insulated, with a 50 Amp breakers in both distribution boards. Main distribution board has an 80 Amp mains breaker. 16mm Square can handle up to 83 amps continuoustly.

Just needed affirmation thanks.

50a at 28m should be about 10mm^2 so your 16 will be good.

 

[jambai]

Should be looking it up in sans 10142 than asking on a forum

 

[soulie]

Cable will be a 16mm square 3-core of 26-28 meter length, running in a steel trunking in the ceiling void. Cable will be double insulated, with a 50 Amp breakers in both distribution boards. Main distribution board has an 80 Amp mains breaker. 16mm Square can handle up to 83 amps continuoustly.

Just needed affirmation thanks.

16 mm cable in a wireway at 30deg c gives you a current of 63 amp max .
double insulated ? ,if youre talking of a standard unarmoured 3 core cable, thats pvc coated with a sheath thats not double insulated ,but in a roof space its not needed .
your correction factor can be as high as 0.80 with a max temp of 50 c,also make sure the cable isnt 3 phase cable on a single phase install ,its not compliant ,if not done correct youre throwing money away and wont be happy with the end result ,which could be a burnt cable or bad harmonics .