[BC] LED obstruction lights

[Warren Shulz]

Original work was schedule 40 threaded pipe totally enclosed wiring and
was rusted inside out.  Side light weep hole vents (screens on bottom)
were painted closed and  rain water would glide down globe and enter
piping.  Iron bacteria  loaded inside of 1 inch pipe.  Did know this
until removed.
This stuff survived for 60 years with little repair.  I knew I was on
borrowed time as it was un-repairable.  Inside of pipe was packed with
iron growth.

Replacement was sized for strobe future wiring with 1.5 inch schedule 40
alum. pipe.  Used 1/2 inch sealtite from JB to side fixtures (short
run).
Wanted to avoid rubber cordage.  

Do know of a 50 kw using Romex on tower leg.  That would make me
uncomfortable.  We did bond the alum. pipe every 50 ft to rusty steel.
One thing we learned is clamps must be every 8 ft or less.  Used SS back
to back clamps and had vibration damage were tower guys did not follow
directions.
You are going to ask....We used capacitive SS hardware for clamps.  Out
a few years now and no issues. Said and done this rebuild was in the
area of $30K for materials and labor.  We did it in several phases.

Warren Shulz
WLS CGO

-----Original Message-----

 From: Mike McCarthy

Warren...was the cabling between the base and fixtures in conduit?

MM

> I took have seen a fellow broadcaster spend thousands of dollars with
> replacment LED beacon parts and the tower labor to transport up and
down
> tower.  Something to be said for a light bulb!  Products are not ready
for
> prime time on AM towers.
>
> Warren Shulz
> WLS Chicago
>