| [GMCnet] Addition to fire prevention steps [message #132208] |
Mon, 27 June 2011 09:03  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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G'day,
As noted in earlier emails I am working on a treatise regarding GMC fires.
Gene posted a link to the quote below on his website in response to Pete's
question about coiling his power cord.
"An inductor is a coil of wire that will restrict/impede the flow of AC
current & will heat up the same as an equivalent resistor value (as in an
electric heater). Operating the coach at maximum load (80 amps) can be a bit
sporty with the shore power cable coiled up nicely in its electrical box
(creates an inductor). It has been reported at an FMCA rally, technical
seminar; that fires have occurred due to the coiling of the shore power
cable into a small electrical storage area. When I plug into shore power, I
always pull all the wire out of the storage area & lay it on the ground in a
straight line to prevent the coil effect. This will also minimize the
voltage drop (maximize the ac voltage available) of the shore power cable
while running under loads. Type "SO" wire/cable is a much better choice than
the OEM for the shore power cable, since it has a neoprene rubber jacket &
has very fine wire strands. Type "SO" is rated at a much broader range of
temperature operation w/o becoming stiff & brittle."
I'm a bit confused by the statement:
"Operating the coach at maximum load (80 amps) can be a bit sporty with the
shore power cable coiled up nicely in its electrical box (creates an
inductor)."
Is (80 amps) a typo; should it not be 50 amps? The power cord is rated for
50 amps and campsites have 50 amp circuit breakers on the sockets.
Has anyone ever heard of a GMC that caught fire because of this?
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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