Whole house surge suppressors

[Chris Lewis]

Ah...reminds me of one of my less-brilliant moments. Having a few
suds, no meter available, cellular phone seemed to be not charging. I
tongue-tested the adapter...only 10.6 volts, but with an 850 mA
capacity. I don't know how many ohms it is on a small area of a human
tongue, so I don't know how much current I was subjected to, but it
felt like the top of my head was coming off.

Just a bit of a surprise that's all, 10V is not much worse than 9V,
and tongue-testing 9V batteries is quite popular ;-).

Imagine, tho, the guy I knew who tongue-tested the charge cap in
an electronic flash (90V+).

He couldn't taste anything for a week.

 

[Tom MacIntyre]

It's how you test 9V batteries. And my guitarist was a wuss.
I never ENJOYED it, but I learned to do it quick and have the
battery of the tongue before I realized taht I've got it.
Better than the "jam in on your tongue and hold" technique.

I as well, but they don't pack the wallop that that adapter did.

I never did the on-set grip's "trick" of pick up a 100A light outlet
(which is simply 2 HUGE copper paddles with a box about the size
of your fist). He said "you just touch it with the BACK of your hand
and when the power hits you, the muscle contraction pulls it away."
THanks, I'll just grab a meter.

But you'll watch experienced electricians putting one hand in their
back pocket or belt while working a breaker panels. Keeps away the
temptation to grab a good ground pretty much guaranteing death if the
other hand hits live. with the hand ungrounded, death isn't guaranteed.

Pay for your friends to take CPR classes, a worthwhile investment.

First shop class topic in my firt year EET program.

Tom

 

[Tom MacIntyre]

Just a bit of a surprise that's all, 10V is not much worse than 9V,
and tongue-testing 9V batteries is quite popular ;-).

A 9 volt battery can't put out as much current.

Tom

 

[Chris Lewis]

A 9 volt battery can't put out as much current.

Enough to be limited by the resistance of your tongue rather than the
battery, so the short-circuit current limitations aren't really relevant.

 

[Tom MacIntyre]

Enough to be limited by the resistance of your tongue rather than the
battery, so the short-circuit current limitations aren't really relevant.

Well...I was there, and have done both, and believe me, the difference
was relevant...REALLY relevant.

Tom

 

[clifto]

-- Ring Voltages: 70Vrms to 90Vrms, NOT 90V "or more".

The last time I asked in comp.dcom.telecom, the answer I got was 98V at
20 Hz (nominal) coming out the office. If all your ringers are electronic,
there's a good chance you'll see most of that at the phone jack.

 If it cannot leave the telco at >90Vrms, be FCC
spec,

Please cite your FCC spec.

 

[Gary Lecomte]

The last time I asked in comp.dcom.telecom, the answer I got was 98V at
20 Hz (nominal) coming out the office. If all your ringers are electronic,
there's a good chance you'll see most of that at the phone jack.


Please cite your FCC spec.

I use a whole house supressor in my house. Not because it may get
struck by lightning, but because we get a lot of power losses here.
With a GOOD Ground on the Main Box and Surpressing the spikes closer
to the source, definately helps reduce the spikes at the equipment.
I also have some for sale on my website.

Take care.......Gary

 

[Travis Jordan]

The last time I asked in comp.dcom.telecom, the answer I got was 98V
at 20 Hz (nominal) coming out the office. If all your ringers are
electronic, there's a good chance you'll see most of that at the
phone jack.


Please cite your FCC spec.

§ 68.306 47 CFR Ch. I

(d) Ringing sources. Ringing sources,
except for class A OPS interfaces, shall
meet all of the following restrictions:
(1) The ringing signal shall use only
frequencies whose fundamental component
is equal to or below 70 Hz.
(2) The ringing voltage shall be less
than 300 V peak-to-peak and less than
200 V peak-to-ground across a resistive
termination of at least 1 megohm.
(3) The ringing voltage shall be interrupted
to create quiet intervals of at
least one second (continuous) duration
each separated by no more than 5 seconds.
During the quiet intervals, the
voltage to ground shall not exceed the
voltage limits given in paragraph
(a)(6)(i) of this section.