Hello Bill,
You have to look at the specifications of a breaker. Some breakers have a
combination AC and DC rating. A 600 volt AC breaker can be use on
a 250 VDC circuit. In this case the LINE side goes to the power source.
We install these type of dual voltage breakers that supply either AC or DC
loads.
You can also back feed these breakers, meaning we can supply a power source,
such as a emergency generator to the branch side of the breaker which is the
same
as the load side in normal operation.
Some breakers have a screen vent on the load side of the breaker. This is to
vent the smoke that comes from the ark of the contacts. In this type of
breaker, make sure that the breaker is mounted vertical with load terminals on
the top.
Roland
- Original Message -
From: Bill Dennis via EVmailto:ev@lists.evdl.org
To: 'Electric Vehicle Discussion List'mailto:ev@lists.evdl.org
Sent: Tuesday, March 31, 2015 4:40 PM
Subject: [EVDL] Line and Load on Breakers
When putting a Heinemann breaker on the negative side of a traction pack, do
you reverse the connections so that the current still flows in the same
direction though the breaker? That is, should the Line side of the breaker
be connected to the B- terminal of the controller, and the Load side of the
breaker be attached to pack negative?
Thanks,
Bill
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