Dynamo Hub Wiring
07-27-22, 11:27 PM
#1
Newbie
Thread Starter
Dynamo Hub Wiring
I've seen some dynamo hub where there is earth or negative sign indicating ground side of the connector, I have PV-8 dynamo and the connector doesn't indicate which one is positive or negative, the pdf instruction does't indicate that either, Does anyone know if this dynamo hub has specific postive and negative side at the connector? or can it be wired either way?
07-28-22, 07:44 AM
#2
Senior Member
Join Date: Aug 2010
Location: Madison, WI
Posts: 11,177
Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
Mentioned: 47 Post(s)
Tagged: 0 Thread(s)
Quoted: 3453 Post(s)
Liked 1,453 Times
in
1,132 Posts
SP hubs can be wired either way. It produces AC so there is no + or -, but for some reason some manufacturers have indicated that there was a plus or minus.
Shimano hubs are grounded to the fork, so that is an issue with a Shimano hub if the light is also grounded to the fork (I wasted hours learning about that). But your SP is not grounded to the fork, so does not matter.
I think the reason that some manufacturers had a + and - was because that is a way to figure out how to wire things if components are grounded to the fork or frame.
Shimano hubs are grounded to the fork, so that is an issue with a Shimano hub if the light is also grounded to the fork (I wasted hours learning about that). But your SP is not grounded to the fork, so does not matter.
I think the reason that some manufacturers had a + and - was because that is a way to figure out how to wire things if components are grounded to the fork or frame.
