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## RE: Electric A/C system?

 To: "Jacques Dupuis" RE: Electric A/C system? rdonahue@holli.com (Robert J. Donahue) Tue, 26 Aug 1997 23:07:18 -0600 (MDT)
 ```One HP is 746 watts, which would require 62 amps in a 12 volt system. Does it really take 4 HP to run the compressor? That would take 248 amps! >Being an RV"er (and a MGB loyalist), I have never heard of an Electric A/C= =20 >system used in in a vehicule. The A/C system seen on top of RV"s are 120= Volts=20 >operated when stationnary. >If an engine driven A/C system requires say 4HP to run a compressor, the= same=20 >4HP (electric power) would be required. This would require a fairly large= =20 >electric Motor with a very large amp demand. I do not think any current 12V= =20 >system could take this for very long. If my calculations are right (I know= =20 >there are electrical engineers around that could (and will, if I goofed)=20 >destroy my theory) such an electric motor would require 350 Amps to start= and=20 >about 125 amps to run. Not many alternator can sustain that output for= long. >JDMG@msn.com >Jacques >"74 B (Chrome) no A/C but top down year round > >---------- >De : owner-mgs@autox.team.net de la part de Nory >Date d'envoi=A0: 26 ao=FBt, 1997 00:38 >A=A0: Scott Gardner >Cc=A0: mgs@autox.team.net >Objet=A0: Re: Electric A/C system? > >I believe there is a similar unit made for RVs. Don't know how much >power they need or how much space they take up (if one would fit under >the hood). Maybe there are some RV'ers out there who know? > >-NORY >Don't assume that because you have found one problem, you have found the >ONLY problem. >=20 > '74 Midget & '71 parts car > '94 Ford Ranger > '86 Ford Escort > '89 Ford Probe > '96 North American Shepherd >http://www.geocities.com/SiliconValley/Way/9101 > > > > > > Bob Donahue 'Still Stuck in the '50s' =20 rdonahue@holli.com =20 52 MG-TD #17639 under DIY restoration, NEMGTR #11470 71 MGB still in shop, 20 months and counting =1A ```
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