[Amps] what is a 4 wire 240VAC service?

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Sun, 3 Apr 2011 17:27:37 -0700 (PDT), Roger Parsons <ve3zi at yahoo.com>
wrote:

>(2) What bright spark decided that black was a good colour choice for the hot wire?

REPLY:

Sounds logical to me. Think of the Black Death.  :-)

A better question is why black is used for ground in the electronics
world. Isn't ground brown?

73, Bill W6WRT