AC voltage and line loss
Hey guys, I have a 96 Bounder 34j with two brand new Coleman 13,500BTU AC units.. the weather is extremely hot right now and everyone is running their AC’s... even with my Hughes Autoformer I’m runnin...
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i know you didn't
but i have that generator, that is what the basic schematic connection diagram shows
in fact most RV onans have that same schematic diagram
they are very much like a center tapped transformer
they are NOT one 3.6kw, 4kw, 5kw, 6.5kw, 8kw winding being connected to (2) breakers, in most cases the neutrals are tied together as a center tap and you can get 240 across the hots, so you can fudge a little bit on the load balance but you can't get 12 -14 on one and 28 on the primary without serious heat inside the stator, the stator windings are designed for equal load even if the output breakers are not setup that way
you get by with 20+ amps on the house side as long as the side connected to the second A/C is running light can can absorb some of the heat inside the stator, but you can't be guaranteed that you can run 27amps on the house when the second is is pulling 15amps, yeah thats 42 and its imbalanced
and why does a 41 amp 5kw generator have 50amps 6kw of breakers
and people come on here and wonder why they have to replace the stator in the generator ( HEAT DAMAGE !! )
look at all the portable generators that offer 230v,
windings are configured as (2) in series for 230v, center tapped at the coupling connections to produce 115v to (2) different outlets
you can't use 70% capacity on one outlet and 30% on the other
a power grid can absorb imbalance on one drop, because the next drop on the loop is imbalanced to the other leg
a generator can't do that, overheating in the generator stator is cumulative damage just like in the fridge running off level
ok off my soap box... sorry
but i have that generator, that is what the basic schematic connection diagram shows
in fact most RV onans have that same schematic diagram
they are very much like a center tapped transformer
they are NOT one 3.6kw, 4kw, 5kw, 6.5kw, 8kw winding being connected to (2) breakers, in most cases the neutrals are tied together as a center tap and you can get 240 across the hots, so you can fudge a little bit on the load balance but you can't get 12 -14 on one and 28 on the primary without serious heat inside the stator, the stator windings are designed for equal load even if the output breakers are not setup that way
you get by with 20+ amps on the house side as long as the side connected to the second A/C is running light can can absorb some of the heat inside the stator, but you can't be guaranteed that you can run 27amps on the house when the second is is pulling 15amps, yeah thats 42 and its imbalanced
and why does a 41 amp 5kw generator have 50amps 6kw of breakers
and people come on here and wonder why they have to replace the stator in the generator ( HEAT DAMAGE !! )
look at all the portable generators that offer 230v,
windings are configured as (2) in series for 230v, center tapped at the coupling connections to produce 115v to (2) different outlets
you can't use 70% capacity on one outlet and 30% on the other
a power grid can absorb imbalance on one drop, because the next drop on the loop is imbalanced to the other leg
a generator can't do that, overheating in the generator stator is cumulative damage just like in the fridge running off level
ok off my soap box... sorry
