1 ton = 12,000 BTU's SEER = how many BTU's per kW (Since you asked about "rough electrical load" for this equation we're going to ignore the complexities for EER vs. SEER, COP at varying outdoor temps and so on. We'll leave that for someone else to discuss if they desire)
Plus you'll want to add approximately 150 watts per ton for the air handler Assuming a 13 SEER AC unit the math is; 2.5 tons x 12,000 BTU's = 30,000 BTU's 30,000 BTU's/13 SEER= 2.3 kW 2.5 tons x 150 watts/ton for air handling = 375 watts For a total running kW of ~2.7. That's how I do it. Doesn't mean it's the right or only way. Best, Travis Creswell Ozark Energy Services -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jay peltz Sent: Friday, August 22, 2008 9:23 AM To: RE-wrenches Subject: Re: [RE-wrenches] offgrid system question Can someone tell me how to convert AC "tons" to rough electrical load? or is there a way? I've got a customer who is wanting to install a AC unit and they tell me its a 2.5 ton and uses 9000 watts. ( they haven't given me make or model yet) thanks, jay _______________________________________________ List sponsored by Home Power magazine [email protected] http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org No virus found in this incoming message. Checked by AVG. Version: 7.5.526 / Virus Database: 270.6.6/1627 - Release Date: 8/22/2008 6:48 AM No virus found in this outgoing message. Checked by AVG. Version: 7.5.526 / Virus Database: 270.6.6/1627 - Release Date: 8/22/2008 6:48 AM _______________________________________________ List sponsored by Home Power magazine [email protected] http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
