Red + Black or just Black on the DC side?

[Ramjam]

Do you use red & black or just black on the DC side? If I look in the regs I'm supposed to be using red & black or red & blue depending upon earthing but I've seen systems installed in just black.

 

[malcolmsanford]

DC should be black and grey on a PV two wire non earthed system

Grey negative Black Positive

 

[Markc]

BRB. Pg 92. Section 514. Table 51. Identification of conductors.

Two-wire unearthed DC power circuit.

Positive L+ = Brown
Negative L- = Grey

Black is never used on DC power not according to BRB.

 

[malcolmsanford]

thank stand duly corrected