The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
230 or 345 kV transmission lines?
by annemarie1
10/12/16 01:23 PM
Is this a fix or just a bandaid?
by gfretwell
10/10/16 06:49 PM
New in the Gallery:
12.5A through 0.75mm flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 11
renosteinke 6
HotLine1 6
ghost307 5
sparky 4
Who's Online
1 registered (annemarie1), 302 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#41229 - 08/19/04 01:43 AM What is meant by "installation"?
Quickdraw Offline
Junior Member

Registered: 08/18/04
Posts: 1
the label on the power supply (hopefully) shown below says:
"Caution! Intended for installation in a protected environment."

What is meant by the word installation? Does it mean that the power supply must be mounted with screws using the fixtures on both sides of the unit or can it also be laid on the floor behind the machine it supplies (office printer)?

Caution! Intended for installation in a protected environment.

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#41230 - 08/19/04 05:53 AM Re: What is meant by "installation"?
Bjarney Offline

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
Likely "protected" means ‘away from moisture and temperature extremes,’ and “installation” in this case simply means ‘placement.’

[This message has been edited by Bjarney (edited 08-19-2004).]

#41231 - 08/19/04 02:46 PM Re: What is meant by "installation"?
electech Offline

Registered: 02/18/02
Posts: 113
Loc: Northern Il
That looks like it might be information technology equipment. If so, or even if not - many standards being similar, its components and insulation were probably evaluated for use in a pollution degree 2 environment (normal office environment). The manufacturer is being responsible in letting the consumer know this, even though it is common sense that an electrical device with vent holes is not suitable for a wet installation/use. This conformity magazine link (pdf file) covers pollution degree and the impact on product construction pretty well:


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals