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From: John Woodgate
Subject: Re: MOV from A to E ??
Date: Tue, 3 Dec 2002 09:27:25 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Tue, 3 Dec 2002 10:06:58 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Phil Allison
wrote (in ) about 'MOV from
A to E ??', on Tue, 3 Dec 2002:
>I have unit made by DOD of the USA in my workshop.
>It is in a one RU steel box and is called a "power distribution module" -
>model 828 series 2.
>There are a pair of adjustable lamps (with dimmer) in fittings that retract
>into the box mounted on the front - this will light up those units mounted
> It further has a row of 10 IEC outlets on the rear panel and a single IEC
>inlet with a simple thermal breaker in the active.
> There are two 250 volt 20 J MOVs on the PCB that connects the 10 outlets
>in parallel - one from A to N, the other from A to E.
>There are no approval logos or numbers of any sort on the unit.
> Any thoughts ??
While and MOV from A to E was allowed in the past, it is now allowed
only in exceptional circumstances. The unit must be hard-wired to the
supply, not plug-in, and there must be TWO separate earth paths back to
the earth bar in the fuse box. AIUI: I haven't actually seen the
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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