[RE-wrenches] MIGB's

[William Miller]

Adam:



Have you considered the Heyco or other types of gland nuts?  I know these
don’t bond your rigid, but you can slap on a ground clamp at an appropriate
location.  A gland nut will keep spiders out of your pipe.



The gland nuts will also keep out (or hold in water).  I hate to try and
make any conduit or boxes watertight.  Condensation just happens.  Instead,
we make sure conduits and boxes can drain.  You can drill a weep hole in a
low spot, leave off a gasket or if one of the Heycos is at a low spot, poke
out an extra opening.  Weep holes are allowed by code as long as they meet
criteria.  I think is a maximum of ¼” diameter.



Good luck.



William



PS:  Or put a bell box on either end of the conduit.  Bond the bell box and
the conduit is bonded.  Screw the gland fitting into the bell box to keep
critters out and protect the wire.



Wm







[image: Gradient Cap_mini]
Lic 773985
millersolar.com <http://www.millersolar.com/>
805-438-5600



*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *AE Solar
*Sent:* Tuesday, February 16, 2016 2:51 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] MIGB's



Wrenchers,

What are you all using as strain reliefs on the ends of conduit runs that
run between arrays on roof mounts? We have arrays on two roof sections with
a piece of rigid conduit connecting the two,  and galvanized MIGB's (ground
bushings maybe some people call them?) on each end of the pipe. It was just
cited on an inspection that this was improper use of equipment because the
galv MIGB's are not rated for outdoor use? Anyone have anything to back up
the use of this method or have a preferred method for strain relief and
bonding for this application? Thanks for any thoughts.

Adam


Adam Katzman
Autonomous Energies
PO Box 1245

Kingston, NY 12402
www.autonomousenergies.com
(518) 567-1468
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