backup generator specs... [RE-wrenches]

Dan Rice danrice at scinternet.net
Sun Jan 14 00:09:14 PST 2007


I've had success with the Coleman Powermate PM401211, their 11.5 kW (standby
rating) unit. (Thanks to Jeremy at All Solar for the leg up on this unit).
It runs a Honda V-twin, 24hp engine, EPA & CARB Certified on propane/NG, is
2-wire start, set up for propane/NG out of the box, minimal phantom load on
starting battery, (10 w module to the starting battery handles the load
fine), onboard starting battery charging when engine is running,
weatherproof sound attenuator housing, mounted on a base plate so it can be
placed on a gravel base out in the open without further mounting hardware or
enclosure, dual rating, including lower output rating for long-duration
standby operation (11 kW), 3 year/1500 hour warranty (factory service rep
told me that off grid does not void warranty, but I don't have that in
writing), and "reasonably" priced ($4200 or thereabouts). Drawbacks:
3600rpm, air cooled, 120/240 only (not reconfigurable for 120 full output).
Coleman also offers a 20 hp10 kW model (PM400911) -same type Honda V-twin,
same basic unit, only lower output. I haven't used this one -customers have
chosen the larger units due to local availability. I guess for on-grid
standby, folks tend to spend the extra few hundred for the bigger unit.

Dan Rice
Abundant Sun, LLC.

----- Original Message ----- 
From: "Jim Duncan" <ntrei at earthlink.net>
To: <RE-wrenches at topica.com>
Sent: Friday, January 12, 2007 9:21 AM
Subject: backup generator specs... [RE-wrenches]


|
| A customer, building a small 1kW PV off-grid weekend home, insists that
| he can get a better deal on a backup generator than I and insists that I
| won't get to make that choice. So wanting to at least have some
| oversight in what he buys, told him I would forward some technical info
| to him since all generators are not created equally inverter friendly.
| Where can I find a list of specs, on the www, relating to the do's and
| dont's of generator selection? Combing thru the archives of the Wrenches
| site was really slow and cumbersome and only turned up specific genset
| related issues.
| Come to think of it, I could use an update on the subject with so many
| different brands currently on the market and the fact that I rarely do
| off-grid installs.
|
| Thanks as always
| Jim Duncan
| North Texas Renewable Energy Inc
| Fort Worth, Texas
|
|
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