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Re: [GMCnet] Honda generator [message #339435 is a reply to message #339434] Sun, 09 December 2018 09:37 Go to previous messageGo to previous message
Matt Colie is currently offline  Matt Colie   United States
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Registered: March 2007
Location: S.E. Michigan
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Dolph Santorine wrote on Sun, 09 December 2018 09:02
I've been doing some research on our coaches regarding the power, and it directly relates to the generator (or sort of).
A Great Laker who was employed by GM when our coaches were built insists that they were all made with 50 amp service.
I've done quite a deep dive on the parts book and the service guides and he appears to be correct.
The only cord listed is 50 amp, and the number of coaches fitted with a 30 amp plug in the 50 amp cutout (in the cord bin on the side of the coach) is very high.

Does anyone have additional information?

The 30 amp cord seem to be an "previous owner" convenience add on.
But some things don't make sense. Why have a 30 amp cord (3.6 kW) when you have a 6kW generator?
Whereas 6kW is very conveniently 50 amperes?
I understand two air conditioners requiring more than 30 amp service.

Comments.

Dolph
OK Dolph,

Here are some comments....
As far as the GM paper work goes, all the GMC fitted out coaches were 50 amp. Even the 23s (like mine) were originally fitted with 14-50, 4 wire cable and a dual breaker in the box.

This, the single waste tank, and the sleep under-way capability were all part of the motorhome type RV vision of the coming way of travel. It was believed in the 70s that 50amp was the way of the future because of increasing electrical loads. The single waste tank was a direct response to the dwindling number of places that grey water could be dumped on the ground. And the sleep underway is because they found that many liked ability to long haul and co-drive. A GMC makes this a very practical mode of travel. (Don't try to sleep in the back of a "C" underway.)

The 50 amp is the one that they got right. (IMNSHO) All of the new monster coaches are 50amp and campgrounds that cannot do 50 are being bypassed. (or at least getting low marks on reviews) There are now systems available to start a monster inverter or the APU when you are going to trip the 30 Amp post.

Many of the coaches upfit by others went with 30 amp feeds and goofy stuff to run a second A/C unit. This allowed a way lighter shore power cable. I, for one (and maybe 1 only), do not find the 4-#8 cable that hard to handle unless it is below 20°F (-7°C), but then, I did spend a lot of my life handling dock lines and diver's hoses.

And, at this point, We could be the only people I know that have slept the off-watch crew underway, but the interstate system has grown a lot even in the last couple of decades.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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