What is the minimum watts portable gas generator to run a Yong Heng?

[powderburner]

I plugged in a watt meter to my Yong Heng and the start up and average running watts while filling my tank watts was 1450 watts.

Is there a reason why a a 2000 watt gas generator won't work? I'm asking because some members suggested it won't work.

Rod in San Francisco

If you can set your watt meter to show you start up watts ,, you can put a nail in this discussion.

This generator has 2400 starting watts,..

https://www.amazon.com/dp/B08JZK3SNJ/ref=sspa_dk_detail_3?psc=1&pd_rd_i=B08JZK3SNJ&pd_rd_w=n47Rc&content-id=amzn1.sym.3309c9d3-bf37-499a-888c-9ce693c3483f&pf_rd_p=3309c9d3-bf37-499a-888c-9ce693c3483f&pf_rd_r=KQDWNB0F66M8XPZSKWHA&pd_rd_wg=83o0K&pd_rd_r=c55909b9-5303-4eea-8e73-573f96e0ef04&s=lawn-garden&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyUkg5UDc5OVlPSkRDJmVuY3J5cHRlZElkPUEwMzEyMDAzRllPWURNMzBGVElGJmVuY3J5cHRlZEFkSWQ9QTAwMDUxMjIyV0FTREpUVFQyTENDJndpZGdldE5hbWU9c3BfZGV0YWlsX3RoZW1hdGljJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

 

[JimD]

Well it's nice you guys agree but can you also explain why my 3.6 KW power supply works?

 

[powderburner]

Well it's nice you guys agree but can you also explain why my 3.6 KW power supply works?

Your power supply is 1800 watt running and 3600 watt peak, according to milwaukee. why wouldnt it work. https://www.milwaukeetool.com/Products/Equipment/Power-Supply/MXF002-2XC#s-Specifications

at least until your batteries run down ,,,

 

[JimD]

It works but some are claiming it takes 7-14KVA to start up a YH and my power supplies only supply 3.6 KW for startup. So if their calculations are right, why does my power supply start my YH? Seems like my experiment is inconsistent with their calculations. To be fair, the YH seems to start a fraction of a second slower than normal when on the power supply. But I did it twice and it started both times. Maybe next time my tank needs filled I will do it with the power supply.

 

[Rawroots]

To make things simple, just try one before purchasing, someone somewhere should have one.

 

[Firewalker]

I'm not an EE but I stayed at a Holiday Inn last night...

My kill-a-watt reads about 1500w running. I keep it plugged in to the receptacle closest to the panel and have yet to trip a 15A breaker.

 

[SilentSquirrel]

I'm not an EE but I stayed at a Holiday Inn last night...

My kill-a-watt reads about 1500w running. I keep it plugged in to the receptacle closest to the panel and have yet to trip a 15A breaker.

Did you happen to take notice of the reading at startup, @Firewalker?

 

[Firewalker]

Did you happen to take notice of the reading at startup, @Firewalker?

Sorry, the Kill-a-watt isn't that fast, I can see a spike from time to time when it starts but you would need an analog meter or a better Amp meter to get an accurate reading.

 

[badger5th]

The oversize factor on a generator is to take into account voltage dip. When a high load is applied to a generator the engine RPM will drop which causes a voltage dip. The generator regulator attempts to correct this situation by opening the throttle. Standard practice when designing a generator for building standby power service is for a 30% voltage dip. This is the maximum allowed voltage drop when a load is added before the regulator can correct the generator RPM/output.

Some electrical loads require a lower maximum permitted voltage dip such as certain elevators, they are permitted a maximum 10% voltage dip which results in crazy large generators.

I suggest an experiment for those who own plugin watt meters. Plug your YH into the meter, set the meter for reading voltage and see how much the voltage drops from a 15 amp circuit on startup.