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Multiple power strips daisy-chained, code?

snipped-for-privacy@gmail.com wrote: >

The same religious bullcrap from the compulsive w.

Still never a link to another lunatic that agrees with w that plug-in suppressors do not work.

Still never answers to simple questions:

- Why do the only 2 examples of protection in the IEEE guide use plug-in suppressors?

- Why does the NIST guide says plug-in suppressors are "the easiest solution"?

- Why does the NIST guide say "One effective solution is to have the consumer install" a multiport plug-in suppressor?

- Why do w's "responsible companies" make plug-in suppressors?

- Why does "responsible company" SquareD say "electronic equipment may need additional protection by installing plug-in [suppressors] at the point of use"?

For real science read the IEEE and NIST guides. Both say plug-in suppressors are effective.

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bud--
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bud--
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There is no requirement that he do so. His opinion is law until you take him to court. If you like tilting at windmills, go for it but don't expect to ever win.

What's your time worth?

Reply to
krw

it's

y

-)

ide quoted text -

I have a 3-1 adapter (about a buck at Home Depot) in my laptop travel bag that means I do not have to choose whether to lose lose the lamp or the alarm clock on the hotel room bedside stand.

Reply to
Richard Henry

In article , snipped-for-privacy@gmail.com=20 says...>=20

s in

eakers!

Citation please.

Reply to
krw

Yes, it is the authority via the laws in your community. It has defacto via national adoption, though as I said, your jurisdiction may adopt variations or may not be up to date.

Yes, or via licensed engineer.

Yes, OSHA only has jurisdiction over employees workplaces.

There is none. They *are* god (little 'g'). Many act like it too.

Reply to
krw

Your insurance _won't_ pay when the church burns down, because the fire marshal warned you ;-)

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |

Obama is about to make Herbert Hoover look like a financial genius
Reply to
Jim Thompson

Only

Well, that why I want to know the regs. He gave us some time but if we can't convince him the Sawzall has to come out, plus half a mile of wire :-(

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Regards, Joerg

http://www.analogconsultants.com/

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Reply to
Joerg

need

The

Only

it's

exactly

Just keep in mind, insurance companies watch for _any_ code violation to avoid paying.

So daisy-chain at your own risk.

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |

Obama is about to make Herbert Hoover look like a financial genius
Reply to
Jim Thompson

Every fiefdom has their own little rules. That must drive designers of pre-fab homes nuts. Item #4:

formatting link 

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Regards, Joerg

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Reply to
Joerg

It may be that the relevant word is "permanently".

I don't know what the UK regs say (if anything), but the only mountings I've ever seen on multi-points are the "teardrop" type (i.e. the bottom of the opening is large enough for the head of a screw, while the top is large enough for the shaft), which can be used to "temporarily" hang the unit on a protruding screw.

Reply to
Nobody

need

The

Only

about

it's

exactly

I don't think there is any. The inspector was very impressed by the clean wiring. He said he is used to church audio booths having a hairball of wires, wall warts and whatnot flying about the carpet. That's when you have a fire hazard. All it takes is one wall wart to melt down. In our booth there is nothing on the carpet, all on raised channels.

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Regards, Joerg

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Reply to
Joerg

These guys even advise how to mount one:

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Same on pretty much all lab benches. So the general notion of "power strips must not be permanent" is most certainly wrong.

I have one that has a slide hole on top and a flange on the bottom so you can secure it without the chance of it sliding out and crashing into the floor, with wall warts and all. Now if that isn't permanent then I don't know. Similar to this one:

formatting link 

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Regards, Joerg 

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Reply to
Joerg

AKA "octopus outlet"? ;-)

Cheers! Rich

Reply to
Rich Grise

I don't see any major issues (I presume "Item #4" means _section 4 ??)

Keep in mind that was a long time ago, 1980.

It's common now for ordinances (building codes) to simply require, by reference, adherence to NFPA and NEC.

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |

Obama is about to make Herbert Hoover look like a financial genius
Reply to
Jim Thompson

Isn't the fire marshal's real concern the daisy-chain??

Do you have "arc protection" breakers?

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     | 
| Analog Innovations, Inc.                         |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| Phoenix, Arizona  85048    Skype: Contacts Only  |             | 
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  | 
| E-mail Icon at http://www.analog-innovations.com |    1962     | 

Obama is about to make Herbert Hoover look like a financial genius
Reply to
Jim Thompson

breakers!

formatting link

Yeah, the number of outlet spec. I've seen that in a lot of jurisdictions and while they may be old they are often still enforced.

If you are lucky. I remember NFPA 70 Article 110 or something like that not allowing high amperage loads such as coffee makers on power strips. Not that this makes a lot of sense either on a power strip that is properly rated.

Anyhow, I have yet to see a conclusive reason why it's unsafe to daisy-chain. Not some law but engineering numbers.

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Regards, Joerg

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Reply to
Joerg

Well, yes, this was just one example where rules contradict. Codes state that power strips may not be mounted yet UL blesses one power strip with mounting holes after the other. Weird, isn't it?

Those have been blessed (by the inspector). AFAIK they are required on new buildings and large remodel jobs out here.

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Regards, Joerg 

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Reply to
Joerg

I can almost assuredly declare that this is only the case with imported products, typically those from China.

There are not very many, if ANY US manufacturers that pull this lame shit.

Reply to
Archimedes' Lever

Absolutely incorrect. By LAW (compliance rules), EACH outlet available on the strip must be capable of handling the full current capacity rating of the strip. Use a little common sense. Hell, the interconnection wires inside handle less current than the blades in the outlets do. If anything inside would fail, it would be the interconnections, not the outlet itself.

Reply to
Archimedes' Lever

in

breakers!

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Florida is known to be the worst state for such things. ISTR they were the last state to adopt the NEC as the default and did so superceding all local regs because each fiefdom had its own stupid versions and enforcement was uneven (can you say "kickback"). It wouldn't surprise me that this entire reg was reversed by state statute.

The NEC is "written in blood", as they say in the trades. Fatal fires are investigated by the NFPA and the causes fed back into the NEC. Everything in there is there because someone died. Perhaps a fire was caused by a (faulty?) power strip in series. UL, OTOH, tests devices for safety. Perhaps that's the difference.

Reply to
krw

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