[ausev] can I do this without blowing myself up...?

MLAB info at easystreetrecumbents.com
Sun Mar 12 13:49:15 GMT 2006


I am making a key switch for electric load-hauler, using a relay through 
which all the battery power will pass on its way to the controller. 
This will be a 36V system running 2x 500 watt motors, so I expect the 
peak amp draw to be about 35 amps.

I have a big relay here (an Omron G7L-2A-TJ-CB), which is a single-pole 
double throw model, so it has two sets of contact, each rated 25 amps 
each.  (Granted, it says 25A 277VAC, but I figure it can handle 25A 
36VDC, or am I just cruising for bruising?)

Anyway, would it be safe to split the battery wire into two (full size) 
wires and run the current through both sets of contacts?  These would be 
simultaneously switched by the key switch.  Presumably, each contact 
would carry max 18 amps, or half of battery current.

Is there something I am missing?  Or would this be a safe arrangement?


-- 
Mike Librik, LCI #929
Easy Street Recumbents
(512) 453-0438
45th and Red River Streets, thereabouts
Central Austin
info at easystreetrecumbents.com
www.easystreetrecumbents.com
www.urbancycling.com


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