I have used a standard Air Conditioning pull out ( either fused or non fused, and 60 amp rated), they cost $13 and have two poles. ( in fact I made a really inexpensive DPDT disconnect by installing two and removing one of the pull out handles, that way they can only use one or the other).
As to the float switch, does the float switch have to be 48v,and if
so what amperage are you talking about. I have used the standard
float switches at 12 and 24v without problems ( running an aux relay).
Could you use lower voltage if you are worried about the 48v nominal causing
severe arcing?
thanks,
jay
Peltz Power
"Allan Sindelar, Positive Energy, Inc." wrote:
Wrenches,1. What has proven to be the best approach you have found for small load centers or disconnects for 48VDC nominal systems? For example, I need two single pole low-amperage disconnects for a 48VDC (nominal) subpanel, for two pump loads in a 6' by 6' well pit (so needs raintight, I believe). If I use 1P breakers I can disconnect each load independently, which is desireable; but a 2P fused or unfused disconnect may be cheaper and simpler to obtain. Best proven methods, please?I have saved and reread earlier postings on QO breeaker DC ratings. Nothing seems appropriate here except Square D FHL16015 breakers in a FA100RB enclosure. But my supply house quote for two breakers in one box is $480. Ouch.Has anyone successfully adapted Heinemann CF/Philips Airpax/Carling 125VDC breakers to a standard NEMA 3R enclosure for use as a DC load center? 2. For the same application, I am using float switches to control 48V mercury displacement relays for these DC pumps. Can anyone suggest a source of SPST, SPDT, and DPDT bat (or any style) switches suitable for 48VDC nominal, low current loads? These would be for a custom relay control enclosure with override and remote low tank alarm signal circuits. Thank you.Allan at Pos Energy- - - - To send a message: RE-wrenches@topica.com Archive of previous messages: http://www.topica.com/lists/RE-wrenches/ List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm Check out participant bios: www.mrsharkey.com/wrenches/index.html Hosted by Home Power magazine Moderator: michael.welch@homepower.com
- - - - To send a message: RE-wrenches@topica.com Archive of previous messages: http://www.topica.com/lists/RE-wrenches/ List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm Check out participant bios: www.mrsharkey.com/wrenches/index.html Hosted by Home Power magazine Moderator: michael.welch@homepower.com
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