[RE-wrenches] Compressor motor/SW+5548

[Jeremy Rodriguez]

Bob
Can you elaborate a little on this extension cord idea either here or off-line? Thank you

Jeremy Rodriguez
Solar Installation And Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand!

On May 30, 2016, at 1:15 PM, "bob at midnitesolar.com<mailto:bob at midnitesolar.com>" <bob at midnitesolar.com<mailto:bob at midnitesolar.com>> wrote:



The (newer) SW5548 was harder on over current protection, mainly because

it could put out more current than the SW4048...

One trick to try is to place a long(ish) extension cord between the SW and the load to give it a wee bit of series resistance.

Doing this would often reduce that OCP and help motors to start.

boB

On 5/30/2016 11:03 AM, Dan Fink wrote:
Does your air compressor have an unloader valve, or can you install one?
That should do the trick, sounds like you are just running into the regular high surge current demand.
Off the grid, compressors are in about the same nasty league as old well pumps as far as surge demand.




Dan Fink
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~ PV Installation Professional
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Executive Director, Buckville Energy
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970.672.4342<tel:970.672.4342>



On Mon, May 30, 2016 at 10:46 AM, Jeremy Rodriguez <<mailto:allsolarjeremy at msn.com>allsolarjeremy at msn.com<mailto:allsolarjeremy at msn.com>> wrote:
Hello
I've got an SW+5548 that will barley start my air compressor. Once it does run it shows 17 Amps on the inverters loads meter. During start up it reads 60+ amps.
Do you think better capacitors would help the situation?
BTW I've never ran the compressor off grid prior.
I even tried #8 from the Breaker to the pressure switch, about 9ft, with no benefit. The compressor will only start with the tank completely empty.

Jeremy Rodriguez
Solar Installation And Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand!
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