British Line and Netural Conventions?

Thanks Homer.
Your explanation makes sense.
The unit works but I thought it was peculiar that neutral is fused and that
the limit switch circuit conducts neutral. When connected to a US 120VAC
wall receptacle, a blue wire on the machine connects to the right pin (hot)
on the receptacle and a brown wire on the machine connects to the left pin
(neutral) on the receptacle.

-Ira

 

It's wrong !

Yes, it's miswired . Blue = neutral and Brown = live. You should correct the
miswiring really. Who did that ?

Graham

 

This machine also has an AC gear motor with 2 white wires and a bluish-grey
curly wire. One of the white wires is disconnected but the motor turns. Do
you know the significance of the curly wire?


Thanks -Ira

 

That's the new color code for Europe but Brown is hot and Blue is cold. You
need to switch them.

 

Is there a capacitor? The other white wire may be for a different voltage or
for reverse. I'd assume white is hot.

 

Was it really re-wired? It has a typical AC receptacle of the type you see
on PCs and peripherals. It worked for many years. I was replacing the DC
motor controller when I encountered the peculiar wiring. Note that this unit
has 2 motors. One is AC for mixing the slurry and one is DC for the turn
table. I mention this because I posted another question concerning the curly
wire on the AC motor.

 

The 'IEC plug' presumably ?
http://www.bulgin.co.uk/Products/IEC_Connectors/iec_images/PX058-28_400px.jpg

These should be wired according to the standard which clearly states which is
live and which is neutral. The plug and receptacle usually have L N and E (for
Earth) clearly embossed in the plastic moulding.

Is the cable feeding it miswired perhaps ?

Graham

 

(1) Europe is not a country
(2) In Great Britain, a country in Europe, the live pin is the bottom
right hand one (of three) in the outlet.

 

In the UK (possible Europe too), since the 1950s or even earlier, it has
been:

Red = H.T
Yellow = Anode
Purple = Screen grid (I think)
Green = Control grid
White = Cathode
Black = Chassis
Grey = Negative bias or feedback or A.G.C.
Brown twisted = heaters (well tucked into the corner of the chassis)
Yellow & black twisted = Loudspeaker
Red & black twisted = Mains
Blue & white twisted = 600 ohm balanced line

 

You should be asking these questions on

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

At least in Germany, black is hot (death = black), blue is neutral ("cold").
PE is yellow/green.

Red is *very* old and no longer used. And I don't remember how it was.

With 3 phases, brown is hot too (1 brown, 2 black, 1 blue + PE).

Nick

 

You have to know that IEC is "backwards" compared to a US recepticle.
Looking at an IEC socket with earth down, hot is to the left, and Neutral
to the right.

 

I don't care who thinks it's backwards.

There's a standard for wiring IEC plugs and sockets and the letters L, N and E
are embossed in the plastic. There's no excuse for mistakes.

Graham

 

Did I say it was? The United States is a collection of states.

It's just upside down from normal.

 

Everyone else's is upside down

 

Left/right? In San Francisco, sockets in commercial buildings are
wired with the ground pin up, and for residential it's down.

John

 

Go pick nits - off your dick.

 

Ah, more of the famous Canadian civility.

John

 

The NEC doesn't specify whether it
should be up or down. That is left to
local codes, I think.

Chuck