Yamaha 3000 iSEB and VA

mena661 wrote:

smkettner wrote:
I knew you needed 4000va+ onan ;)
You can always run the water heat on inverter with the PD covering maybe 50%.
Should not be any trouble as the air and gen will be on for extended period vs the water.

He really needed one of those or the Yamaha EF4500 but the 4500 is bear to work with.

the brochure indicates that these are only a couple of pounds different. what is the issue with the 4500?
bumpy

True RMS voltmeter? I know it is SW but it could get deformed.
Seems odd to read 95 volts without overload.

Hi Wayne,

Voltage is 121.5 when running ~ 2000 watts of load including the air conditioner.

I've tried eliminating all other loads (I'm wired to be able to do so), but it is a "no go".

Instantaneous voltage drop when I start the air conditioner is the same whether I'm on eco or the full power setting. I'm using a twist lock adapter with a thirty amp RV cord.

You mentioned a "weak" generator. Would this be a warranty issue?

Yes, all the advertising is in watts, then when you look at the Owner's Manual specs it's suddenly VA. In the case of the air conditioner and water heater I doubt that makes much of a difference. In the one air conditioner I measured (I'm assuming they're all similar) the VA draw was 7% greater at the high end of the voltage range and 2% higher at the low end. I'd suspect there's more to the story: maybe a weak generator, another power consumer you're not aware of, or high altitude. My eu2000i starts to degrade noticeably at 3,500 feet when it's hotter than 90. You could track it down with a kill-a-watt on the generator output, just not with the a/c and water heater on at the same time. I can't take on the battery question. There could be something like a timer on the inverter, then again maybe not.

Hi mena and smk,

I could, in fact, run the water heater from the existing inverter. However, it does indicate to me that I may consider the Hybrid Magnum 3000 watt unit.

Hi 2edges,

No, I'm talking about adding the water heater to an already running air conditioner.

VA and watts are in fact different (I'm not exactly comfortable with the difference and what it *REALLY* means).

2edgesword wrote:
Maybe I'm missing something but if 2800 VA is Volts x Amps then 2800 VA would be 2800 watts.

When you say the generator will not run a 1,200 watt A/C and 1,200 watt water heater at the same time are you talking about starting the A/C unit with the water heater on?

smkettner wrote:
I knew you needed 4000va+ onan ;)
You can always run the water heat on inverter with the PD covering maybe 50%.
Should not be any trouble as the air and gen will be on for extended period vs the water.

He really needed one of those or the Yamaha EF4500 but the 4500 is bear to work with.

I knew you needed 4000va+ onan ;)
You can always run the water heat on inverter with the PD covering maybe 50%.
Should not be any trouble as the air and gen will be on for extended period vs the water.

Maybe I'm missing something but if 2800 VA is Volts x Amps then 2800 VA would be 2800 watts.

When you say the generator will not run a 1,200 watt A/C and 1,200 watt water heater at the same time are you talking about starting the A/C unit with the water heater on?