On Thu, 10 Feb 2005 15:01:42 -0000, "mack"
wrote:

Has anyone got a circuit to make up one of these for Steel canal boat
please. I have been recommended to go for about 70 amps.


You need four silicon rectifier diodes rated at 70 amps or more (low
voltage rating is OK). Connect them in two series pairs (anode of one
to cathode of the other), then connect the two series pairs in
parallel, but in opposite polarity, between the shore power green wire
and boat ground (battery negative/engine block/etc.).




--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca