Concentric Neutral

[roc1]

What is a concentric neutral exactly?
Thanks
roc1

 

[barbeer]

http://www.mikeholt.com/mojonewsarchive/SV-HTML/HTML/Unjacketed-Concentric-Neutral-Cable-and-Stray-Voltage~20040128.php

 

[don_resqcapt19]

http://www.okonite.com/product_catalog/section2/sheet30.html

Some concentric neutral cables are bare like shown above and some have an outer jacket over the neutral.

Don

 

[celtic]

("Conc Wire" is your concentric)

(The CU wires are concentric here)

These are the type cables Don referred to..."some have an outer jacket".

 

[LarryFine]

Think 'coax'.

 

[mdshunk]

My area has some underground concentric neutral aluminium secondary. When I get phone calls from certain areas about flickering lights and blown up appliances, I can pretty much diagnose that over the phone.

 

[celtic]

Here's another example, the middle image here: