Mark E. Hanson via EV wrote:
I've been using 3M dielectric grease on all outside (weather exposed)
connectors (solar panels) and light bulb sockets since I was knee-high to a
grasshopper (after seeing it used on automotive/boating connectors).
What would be a good lubricant for charging connectors if dielectric grease
is not?
Like Mark, I've always use dielectric grease (or even vaseline in a
pinch) to maintain good connections over time. It doesn't affect the
connection resistance, and keeps out air, water, and dirt.
High-current connectors must have a high contact pressure to maintain a
low resistance despite any surface corrosion. Pressure and sliding
surfaces will rub off any minor amounts of pre-existing surface
oxidation or corrosion.
Dielectric grease is formulated so the pressure is enough to keep it out
of the contact surfaces themselves, but will surround them to keep air,
water, and other contaminants from corroding the connection over time.
This is especially important with aluminum, where it is very difficult
to create and maintain good connections.
Lee
--
Never doubt that the work of a small group of thoughtful, committed
citizens can change the world. Indeed, it's the only thing that ever
has! -- Margaret Mead
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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