Yahoo Groups archive

MOTM

Index last updated: 2026-04-28 23:35 UTC

Thread

500 Series in a cabinet

500 Series in a cabinet

2002-09-03 by Paul Schreiber

> I am a new MOTM user, putting together MOTM/Blacet/Oakley modules
> into a large cabinet or two. I will want to use some 500 series
> modules in the same cabinet as the older modules.


The key word(s)  here is "large cabinet".

The power supplies I use have been around since 1972. They are an "industry standard" size with
common terminals and mounting holes. There are 2 large companies that make these: Power-One and
Condor. I use the Power-One because it has a higher "build quality".

These supplies are available all over the world. They are big and heavy. So, if you are building
a "large cabinet", and you want to power many modules of all types, then buy the HCAA-60W-A model
(about $85 if you shop around). I will make a MOTM-980 Power Distribution board that has all the
needed connectors.

There are several reasons why I don't provide a "front panel remote" power switch:

a) volume/cost. The demand is probably less than 20/yr.
b) tooling/cost. I'd have to make up another set of AC wiring sets, and I have to order a min. of
50 sets.
c) it's not *that* big of a deal. Really! I rear-mount my supply, and use a power strip to turn
it off and on.
d) safety issues due to the fact I sell kits. Having all the wiring "self-contained" on a
MOTM-900 module means that I can control exactly how it's done. Every cabinet will have different
depths/different power supplies. Then there is the 120/240V issues, etc. I have to assume that
*no one* can wire up AC, even though there are many folks that can. But I am in the *liable*
position, not you :) There are 100's of UL issues on AC wiring that I have covered in the
MOTM-900 kit, even though it *appears* like hardly anything is there at all.

I like nice big cabinets, too. But they are just not practical from a shipping/stocking
standpoint (for me).

Paul S.

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.