Specs for actual power use while i2 is charging.

[Bob.Kerns]

Originally Posted by team222badbrad

My watt meter says 109 watts @ .93 amps with the batteries at 3/4 charge.

I suspect that's the maximum charging rate, so you'd not see higher at a lower state of charge. You would see a brief spike at first plugin, but most watt-meters won't show you that. I'm not sure how the rating numbers are calculated; whether they take into account that initial spike. From what I have seen with various devices and various ratings, I suspect they do.

I'd use the 140W figure. It would be rather expensive to have the electrician out a second time to add a circuit. Not just for the electrician, but also the business disruption involved. Running three 20A circuits makes it all straightforward.

Your and my observations tend to confirm that it's not higher than 140W.

[emrnyc]

I was moving around a seg that had a console cover on found this:

100-240 VAC 50-60 Hz 2 AMP

So here its from Seg its label!!

[IMG]C:\Documents and Settings\User\My Documents\My Pictures\2011-05-15_18-18-31_852[/IMG]

Originally Posted by SF Segway Tours

We are trying to calculate the electrical power needed to charge our fleet of Segways. We are building a new storage facility and the electrician needs the information to calculate circuit loads.

We have all Segway i2 units – We are storing 22 units to charge at the same time in the new facility.

I'm aware that the units draw a larger amount of power when initial charging and the seem to be on a lower trickle charge as they proceed through the charge cycle.

Anybody have specs for actual power use while charging.

[Bob.Kerns]

Originally Posted by emrnyc

I was moving around a seg that had a console cover on found this:

100-240 VAC 50-60 Hz 2 AMP

So here its from Seg its label!!

[IMG]C:\Documents and Settings\User\My Documents\My Pictures\2011-05-15_18-18-31_852[/IMG]

Unfortunately, not all that informative.

If it's greater than 1A, and they don't give more than one digit, they'd label it 2A.

2A at 240V would be 480W, which is nonsense. Even 2A at 120V is 240W.

I would wager my own money on 3 20A circuits, 12 outlets per, never tripping a breaker, even if you managed to start them at the same moment (as in recovering from a power outage).

But if you want to go for maximum paranoia, 4 20A circuits, 8 outlets per, you can do that.

Unfortunately, measuring (and describing) inrush current is tricky, and I just don't have the time to do it. And very brief inrush surges are not particularly relevant.

But we can look at a typical circuit breaker's data sheet!

Circuit breakers are rated to trip at the rated current -- eventually. A GE DES-012 20A AFCI breaker, with a 100ms inrush current, won't trip at 4x the rated current. Even a 1 second surge, won't trip up to about 3x the rated current.

Circuit breakers work on a combination of thermal (delayed) and magnetic (instant) detection. Above a certain point (depending on conditions) the magnetic trip will trip it fairly quickly, but that's higher than these currents.

Bottom line -- I'd still just go with 3 circuits, 12 outlets per.

The worst that could go wrong is if you plug in all your Segways during a power outage, and you trip the breaker when power comes back on. In that case, plug in half of them, reset the breaker, and go plug in the rest.

But I don't see how that would be possible.

[emrnyc]

Please don't shoot the messenger ....... Just passing along what I found...
lol

Originally Posted by Bob.Kerns

Unfortunately, not all that informative.

If it's greater than 1A, and they don't give more than one digit, they'd label it 2A.

2A at 240V would be 480W, which is nonsense. Even 2A at 120V is 240W.

I would wager my own money on 3 20A circuits, 12 outlets per, never tripping a breaker, even if you managed to start them at the same moment (as in recovering from a power outage).

But if you want to go for maximum paranoia, 4 20A circuits, 8 outlets per, you can do that.

Unfortunately, measuring (and describing) inrush current is tricky, and I just don't have the time to do it. And very brief inrush surges are not particularly relevant.

But we can look at a typical circuit breaker's data sheet!

Circuit breakers are rated to trip at the rated current -- eventually. A GE DES-012 20A AFCI breaker, with a 100ms inrush current, won't trip at 4x the rated current. Even a 1 second surge, won't trip up to about 3x the rated current.

Circuit breakers work on a combination of thermal (delayed) and magnetic (instant) detection. Above a certain point (depending on conditions) the magnetic trip will trip it fairly quickly, but that's higher than these currents.

Bottom line -- I'd still just go with 3 circuits, 12 outlets per.

The worst that could go wrong is if you plug in all your Segways during a power outage, and you trip the breaker when power comes back on. In that case, plug in half of them, reset the breaker, and go plug in the rest.

But I don't see how that would be possible.

[Bob.Kerns]

The messenger has nothing to fear, and did a fine job.

[emrnyc]

Thank you....

Originally Posted by Bob.Kerns

The messenger has nothing to fear, and did a fine job.