Why chicken out of yr sheer "if" speculation?

Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Posted by cheap-Jack (M) on November 2, 2007 at 08:17:32

In Reply to: Yes what? They'll explode and/or cease functioning? n/t posted by Ugly on November 1, 2007 at 12:51:27:

Hi.

Why don't we check out the schematic first before you start to worry 12V LV would "explode"????

Talking about electrical explosioin - I went through one, bigtime.
It blew the 100A main fuse in my house fuse panel, leaving the whole house in total darkness - for only a short while - as I knew why - immediately afterwards & replaced the big fuse.

What happened was I needed to get a 240V power strip for my 220V rated components since no such thing available in this part of the world.

So I decided to make one. I plugged in a 120V power strip into 240V outlet (my house is both 120/240V powered like most Northern American homes) & the strip exploded right in front of me !!!!

Was I that stupid? I did check out the only tiny surge suppressor inside the so called surge protected power strip & found it was clearly rated 250V. So my assumption betrayed me bigtime.

I should sweat my pants though I did not. When the crappie 250V rated surge suppresser shorted, the two 120V live wires of the 240V outlet (120VAC-0-120VC=240V) shorted, causing a 100A explosion. Consdiering huge power dissipated in split seconds !!!

This explosion taught me to simply cut off the crappie surge suppressor from the 120V power strip before it can be used for 240V. No big deal.

12V "explosion"? Give me a break.

c-J

PS: I dare electricity as HV power engineering is my business.

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Follow Ups Full Thread

Topic - Question on bipolar power supply - Lew 07:40:42 10/31/07 (11)

You need to supply the same voltages and polarities as the existing power supply does. - rick_m 18:56:06 11/02/07 (0)

Yes, as long as they all share the same common reference ground. (nt) - cheap-Jack 09:15:31 10/31/07 (9)

Yes what? They'll explode and/or cease functioning? n/t - Ugly 12:51:27 11/01/07 (2)

Why chicken out of yr sheer "if" speculation? - cheap-Jack 08:17:32 11/02/07 (1)

The "if" statement was required since the OP didn't specify whether the loads are electrically isolated. - Ugly 10:54:42 11/02/07 (0)

Thanks, CJ - Lew 11:47:09 10/31/07 (5)

RE: Thanks, CJ - beermanpete@socal.rr.com 20:29:57 10/31/07 (4)

RE: Thanks, CJ - Lew 20:43:57 10/31/07 (3)

RE: Thanks, CJ - Ugly 12:49:28 11/01/07 (0)

Post the schematic so I can comment further. (nt) - cheap-Jack 07:15:20 11/01/07 (1)

RE: Post the schematic so I can comment further. (nt) - beermanpete@socal.rr.com 21:40:27 11/01/07 (0)

Follow Ups

Why chicken out of yr sheer "if" speculation? - cheap-Jack 08:17:32 11/02/07 (1)

The "if" statement was required since the OP didn't specify whether the loads are electrically isolated. - Ugly 10:54:42 11/02/07 (0)

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