[TechAssist] Re: Need advice from engineering folks.
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 5 May 2004 23:09:45 -0400
Yep ...those are called Cam-locks. Really only needed for BIG amp
racks....100 amp per phase.
Our front end is only 10K watts , with another 4K on the monitors. 50A a
leg is good for me...for now! LOL
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd
----- Original Message -----
From: "walter wood" <wwood_38478@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 05, 2004 11:04 PM
Subject: [TechAssist] Re: Need advice from engineering folks.
> Jeff;
> That sounds similar to what the Von Braun Civic
> Center in Huntsville Al. gives us when we play
> there. Looks like dryer plugs that terminate into 4
> ac plugs on the other end. The civic center was
> "wired for sound" when built.
> I know a person(used to be in a band with him) that
> does sound professionally. He has some large
> "jumper cables" that go into a box.
> He will take the front off the in house breaker
> box, and clamp directly across the incoming line.
> Bypasses the house fuse(breaker box) completely.
> Thanks for the response.
> Walter
>
> --- Shoreline Electronics <jstielau@xxxxxxxx>
> wrote:
> > Walt,
> >
> > As you may recall , I have a pro sound company
> > and do these type of events
> > all the time. We require a 50A single phase drop
> > at the stage area ( Just
> > like your home oven ). 2 legs of 110V with
> > neutral and ground.
> >
> > We have our own distro that hooks into
> > this.......which is basically a
> > breaker panel with a 50 range plug that feeds it.
> >
> > Our early years of doing this , we had the panel
> > mounted to a large plywood
> > panel with AC outlets mounted to the
> > board.......with a small breaker panel
> > you do typically 8 separate 20Amp lines. a few
> > of our amps require 30A and
> > 40A for reliable/full output power.
> >
> > Our distro is now mounted in a nice rack with the
> > breakers on the front and
> > the outlets on the back
> >
> > The light guys have to fend for
> > themselves.........our power is NOT for
> > them.
> >
> > Having the stage setup using this distro insures
> > everyone has good clean
> > power and is on the same power phases which
> > prevents ground problems.
> >
> > You can build a basic distro for about $200
> >
> >
> > =================================
> > Jeff Stielau
> > Shoreline Electronics Repair
> > 344 East Main Street
> > Clinton,CT 06413
> > (860)399-1861
> > (860)664-3535 FAX
> > jstielau@xxxxxxxx
> > =================================
> > ----- Original Message -----
> > From: "walter wood" <wwood_38478@xxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, May 05, 2004 10:48 AM
> > Subject: [TechAssist] Re: Need advice from
> > engineering folks.
> >
> >
> > > I'll never really know what everyone will show
> > up
> > > with, tube, transistor etc.
> > > This will be two flat bed trailers for the
> > stage,
> > > full of band equipment.
> > > I just needed some advice and ammunition to
> > > convince the electric company to put more
> > breaker
> > > boxes than they have been.
> > > Their young engineer doesn't seem to
> > understand.
> > > In years past, with the band "kicking" some
> > light
> > > breakers have blown. Then we would have to keep
> > > some of the lights off.
> > > The college says they need four 20 amp breakers
> > > themselves.
> > > I'm thinking that two 20 amp circuits would do
> > the
> > > stage, but why not get 10 if 6 is required at
> > > minimum.
> > > Thanks
> > > Walter
> > > --- George <grndmstrg@xxxxxxxxxxxx> wrote:
> > > > Walter ,
> > > > You didn't state if the amplifier is of solid
> > > > state or vacuum tube design.
> > > > The way I learned it the fuse requirement is
> > > > increased by 10% for the slow
> > > > blow type and by 50% for the fast blow
> > variety
> > > > back when the tube was king .
> > > > Was the fuse type and value indicated on the
> > > > label? They may have
> > > > conservatively rated the unit and did not
> > want
> > > > nuisance blowing of the fuse.
> > > > Solid state needs fast blow types for better
> > > > attempt at protecting the unit.
> > > > Either way if it has a bad short it should
> > blow
> > > > the fuse. Anyway ask for a
> > > > lot more than you think will be needed, you
> > can
> > > > never have enough power.
> > > >
> > > > George
> > > > Afana Electronics
> > > > Moreno Valley, CA
> > > > ----- Original Message -----
> > > > From: "walter wood" <wwood_38478@xxxxxxxxx>
> > > > To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
> > > > Sent: Tuesday, May 04, 2004 7:54 PM
> > > > Subject: [TechAssist] Need advice from
> > > > engineering folks.
> > > >
> > > >
> > > > > Watts divided volts equal amps.
> > > > > 100 watts divided by 100 volts = 1 amp.
> > > > > That's the way a broadcast engineer told me
> > to
> > > > > remember Ohms Law 40 years ago.
> > > > > Now the reason for the question;
> > > > > I have provided the main outdoor sound
> > system,
> > > > > gratis, for the last 3 years, for the Relay
> > for
> > > > > Life charity.
> > > > > The local college provides the lights, and
> > the
> > > > > electric company puts a tempoary service at
> > the
> > > > > location.
> > > > > We've never had enough electricity.
> > > > > Thet are offering to put a permanent
> > service
> > > > there,
> > > > > and want to know how much IS enough.
> > > > > I measured the current through a 100 watt
> > light
> > > > > bulb, on normal line voltage and read 0.82
> > > > amps.
> > > > > That's about right as the voltage was up
> > from
> > > > the
> > > > > example, therefore the amperage goes down.
> > > > > I measured a 60 watt bulb and got 0.5,
> > exactly
> > > > what
> > > > > it should be.
> > > > > I then measured a Peavey Session 400 amp,
> > and
> > > > it
> > > > > read 0.44 amps at idle, but it didn't take
> > much
> > > > > volume to raise the draw to 1 amp.
> > > > > The back plate on this amp states 600 watts
> > and
> > > > 120
> > > > > volts.
> > > > > It is fused at 6 amps.
> > > > > Following the formula, it should pull 5
> > amps
> > > > "maxed
> > > > > out".
> > > > > I know that's a lot of e-mail, but the
> > question
> > > > can
> > > > > be answered yes or know.
> > > > > "Will I be safe in requiring the amperage
> > of
> > > > all
> > > > > the amps and effects, etc. to equal the
> > total
> > > > of
> > > > > their fused ratings."
> > > > > I would think that would be more than
> > adaquite,
> > > > but
> > > > > I'm asking for the expert advice.
> > > > > I intend to ask for much more because we
> > see
> > > > the
> > > > > need getting larger in the future, and
> > anyway,
> > > > it's
> > > > > impossible to know what kind of equipment
> > > > everyone
> > > > > will show up with.
> > > > > The college already knows the requirments
> > for
> > > > the
> > > > > lights.
> > > > > TIA
> > > > > Water
> > > > >
> > > > >
> > > > >
> > > > > =====
> > > > > Walter Wood
> > > > > Future Tech Home Center
> > > > > 2786 Hwy. 43 N.
> > > > > Lawrenceburg Tn. 38464
> > > > > 931-829-3337
> > > > > Fax 931-829-4044
> > > > > mailto:wwood_38478@xxxxxxxxx
> > > > >
> > > > >
> > > > >
> > > > >
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> > > =====
> > > Walter Wood
> > > Future Tech Home Center
> > > 2786 Hwy. 43 N.
> > > Lawrenceburg Tn. 38464
> > > 931-829-3337
> > > Fax 931-829-4044
> > > mailto:wwood_38478@xxxxxxxxx
> > >
> > >
> > >
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> =====
> Walter Wood
> Future Tech Home Center
> 2786 Hwy. 43 N.
> Lawrenceburg Tn. 38464
> 931-829-3337
> Fax 931-829-4044
> mailto:wwood_38478@xxxxxxxxx
>
>
>
>
> __________________________________
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> Win a $20,000 Career Makeover at Yahoo! HotJobs
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