# Volts Amps Watts Help I'm Dumb

Discussion in 'Electronic Basics' started by BOnepaIn, Jun 7, 2007.

1. ### BOnepaInGuest

If I buy a generator that produces 1000 watts @120 volts which makes
8.3 amps, but use the 12 volt outlet plug how many watts and amps
does it make? I'm talking about this generator
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_
200313480_200313480

It has 120v and 12 v outputs and states it makes 1000 watts at 120
volts; how many watts and/or amps at 12 volts (for charging a deep
cycle marine battery)?

2. ### John PopelishGuest

There is not way to tell.

This manufacturer's data sheet doesn't mention the 12 volt
output at all.
http://www.easterntools.com/images/ETQ1200.pdf

4. ### John PopelishGuest

Correction.

On page 21, the drawing shows a DC rectifier, DC receptacle
and DC circuit breaker. But it looks pretty small. Perhaps
tapping off the excitation circuit. I would guess a few
amps max.

5. ### EeyoreGuest

The 12V output is presumably DC ?

It's anyone's guess. What does the manual say ?

Graham

6. ### JasenGuest

It's most unlikely to be more than 83A
12V won't be enough.

Bye.
Jasen

7. ### Guest

I've a generator that looks identical but is (UK) rated at 750Watts.
The 12V out is marked at 8.3Amps.

8. ### Lord GarthGuest

Odd the manufacturer didn't label the 12 volt output as AC or DC.
I'd hate to hook it to a battery that needs recharging without knowing
the answer.

9. ### Rich GriseGuest

The chances are 99.999999999% in favor of it being DC - I've never even
_heard_ of an AC generator with AC on the auxiliary 12V connector.

If it wasn't suitable for battery charging as it is, they probably
wouldn't have said that so in the ad.

Hope This Helps!
Rich

10. ### John PopelishGuest

In the exploded view, they list DC receptacle, DC rectifier
and DC circuit breaker. I would like to see the current
rating on that circuit breaker. They must not be too proud
of the DC output, because they don't advertise either a
voltage or current spec for it. I'm betting it is a very
crude 12 volt output good for a few amperes (less than 10),
continuously.

11. ### Peter BennettGuest

As a possible comparison, my Honda EU2000i, with the 120 VAC output
rated at 1600 VA, provides a DC output rated at 8 A max, for charging
12 volt batteries. (the actual voltage of the DC output is not
specified.) It is much more efficient to use a 120VAC battery charger
than to use the DC output to charge a battery.

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

12. ### Lord GarthGuest

I'd like to see what charger circuit they use for the 12 volt portion of the
generator.

13. ### Lord GarthGuest

Only the most crude of chargers, I'm sure.

14. ### Lord GarthGuest

Exactly as I feel.

15. ### neon

1,325
0
Oct 21, 2006
watts is the product of amps x volts so 1000 w is the total product available you can change the volts or you can change the amps as you like but the total can only be 1000w that is the criteria more then that adios generator.

Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Continue to site