IRIS Power Series power supply questions - test-drb@ccmp.vtda.org

28 Jan 2002

On Jan 28, 12:17, Christopher Smith wrote:
...
  Hi everybody,

 In preparation for my eventual booting of the IRIS Power Series
 machine, I pulled the back off yesterday and inspected the power
 supply, etc. [...]
...
  The square-ish plugs should all be plugged in to the
plug they
 match.  (I thought this one was pretty safe.) 
That would be my assumption too.

...
  The three loose post-screws go to the three wires that
were just
 floating around loose (coming directly (more or less) out of the
 twist-lok plug.  These screws are labeled N~, L~, and <earth
 symbol>

 The Earth pin on the twist-lok plug is the longer one.  (made sense
 to me, but I can't find anything to confirm it...)

 The L~ probably stands "Live" or something like that (?)

 The N~ probably means "Negative" 
L is Live (or Line in the US), N is Neutral.

...
  The positive lead on the twist-lok plug is the one
that has the
 breaker on it.

 Given that logic:

 The L~, being positive, should be attached to the wire with the
 breaker in it. 
Yes.

...
  The wire connected to the long pin on the plug should
be connected
 to the <earth symbol> connector. 
Yes.  The reasoning is that the earth connection should always be the first
one made and the last one broken in normal connection/disconnection.

...
  The other wire should be connected to the only
loose-screw left.

 There is further evidence in the way the wires were bent, which
 suggests that this is all correct.

 Has anyone see these things before, and can possibly confirm this? 
Yes.  The live wire is always the one with the switch, breaker and/or fuse,
unless it's a two-pole breaker (one pole for live, one for neutral) of
course.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York