-----Original Message-----
From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org]On
Behalf Of ET Lance-Gómez
Sent: Saturday, November 03, 2001 8:08 PM
To: Military Vehicles Mailing List
Subject: Re: [MV] Hooking up a generator
I have followed this thread with interest, hoping someone else would raise
an issue. I don't like to because this is not directly related
to the private ownership of military vehicles (oh, those pesky list rules).
Here goes: My information source (commercial and industrial electrician)
warns that turning off the main breaker and backfeeding 220-240V
is not absolutely safe to anyone working on the exterior lines. This is
because of backfeed thru the neutral. Many homes when wired did
not maintain total separation of the neutral and ground. Hence, crossfeed
of voltage can go out to the neutral. Additionally, not all
neutrals terminate at the meter, some go back out to the main line. Both of
these can cause current to leak from the house to the lines.
The only fortunate part is that usually not all the current available can
flow this way and a lower shock is delivered if some poor lineman
becomes the connection to ground.
Therefore, to be absolutely safe, you must not only pull the main breaker,
but you must also disconnect your neutral.
Sorry to resurrect this thread as it seems to have died, but I was traveling
and couldn't let this go unknown.
Flame me direct or on list if needed.
TED
PS: not directed at you John, it was just easy to use a reply to your msg as
reference.
"J. Forster" wrote:
> There is a relatively safe, although not idiot proof, way of hooking up a
> generator to your house in an emergency. It assumes you have an electric
clothes
> dryer or other high current appliance which plugs in.
>
> DON'T DO IT UNLESS YOU UNDERSTAND THIS FULLY !!!!!!!!!!!!!!!!!!!!!!!!!!
>
> 1. Turn off the main breaker to disconnect from the utility. If you don't
you
> could hurt a utility worker. Tape the breaker so someone else can not
trurn it
> on accidentally.
>
> 2. Unplug your dryer
>
> 3. Plug your adapter cable into the dryer. Tape the plug so it cannot be
> accidentally disconnected
>
> 4. Connect the cable to your generator.
>
> 5. Start the generator.
>
> Under no circumstances either connect or disconnect any part of this
hookup with
> the power on. If you do that, you could have a big shock risk from live
exposed
> connector pins. The dryer fuses/CBs will protect the wiring.
>
> -John
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This archive was generated by hypermail 2b29 : Fri Dec 07 2001 - 00:36:58 PST