ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Increasing demand factors in residential
by gfretwell - 03/28/24 12:43 AM
Portable generator question
by Steve Miller - 03/19/24 08:50 PM
Do we need grounding?
by NORCAL - 03/19/24 05:11 PM
240V only in a home and NEC?
by dsk - 03/19/24 06:33 AM
Cordless Tools: The Obvious Question
by renosteinke - 03/14/24 08:05 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 298 guests, and 17 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 4 of 5 1 2 3 4 5
Joined: Apr 2002
Posts: 7,381
Likes: 7
Member
Tesla:
New to me.....vinegar?? What'cha think Reno??



John
HotLine1 #201463 06/02/11 02:30 PM
Joined: Nov 2007
Posts: 764
K
Member
There are some expanding polyurethane foam type sealant products that are supposedly listed for direct contact with electrical wiring and cable jackets. I haven’t tried it myself, but apparently the Hydra-Seal brand can also be easily removed for future rework.

Hydra-Seal


Joined: Jan 2005
Posts: 5,445
Likes: 2
Cat Servant
Member
HotLine ... it almost makes me want to go to the local gas station and try it out!

Now, if only I could find a way to get cured foam out of my clothes ....

Last edited by renosteinke; 06/02/11 05:26 PM.
Joined: Jul 2004
Posts: 9,923
Likes: 32
G
Member
Ever the scientist I just tried acetone on some cured spray can foam. (Great Stuff, controlled expansion in the blue can)

It softened it up a little but it did not get gummy or break down in a 5 minute soak. It might help you get it out of your clothes tho but if you have "plastic" clothes it might eat a hole in them.

Trichlorethane 1.1.1 is similar.


Lacquer thinner was even less effective.

This is polyurethane and there is not much that will eat it.

Dynasolve CU-6 says they can do it but this is pretty nasty stuff.

http://www.customlinings.com/industrial/ApplicatorsOnly/MSDS_Sheets/CU6_MSDS_SHEET.pdf


Greg Fretwell
Joined: Sep 2002
Posts: 943
Likes: 2
N
Member
Originally Posted by gfretwell
Ever the scientist I just tried acetone on some cured spray can foam. (Great Stuff, controlled expansion in the blue can)

It softened it up a little but it did not get gummy or break down in a 5 minute soak. It might help you get it out of your clothes tho but if you have "plastic" clothes it might eat a hole in them.

Trichlorethane 1.1.1 is similar.


Lacquer thinner was even less effective.

This is polyurethane and there is not much that will eat it.

Dynasolve CU-6 says they can do it but this is pretty nasty stuff.

http://www.customlinings.com/industrial/ApplicatorsOnly/MSDS_Sheets/CU6_MSDS_SHEET.pdf




I accidently tried acetone on a nylon windshirt, (Was going to use lacquer thinner on a stain)It did no harm it may have no harmful effect on other plastics....


On the orig. topic, learned the hard way about sealing conduits when came back to fixtures full of water. Lesson learned.

Last edited by NORCAL; 06/02/11 11:12 PM.
jay8 #201479 06/03/11 11:26 PM
Joined: Jul 2002
Posts: 8,443
Likes: 3
Member
Originally Posted by jay8
A couple of posts mention using spray foam inside raceways, is that stuff approved for use within electrical equipment?

Jay, as far as I'm aware, no, you are supposed to use proper caulking agents inside things like conduits, especially where the conduit could become a fire-path, spray-foam as a rule isn't self-extinguishing, in fact it burns quite readily.
Unfortunately, spray-foam has become the slap-happy approach, leave the spray foam to the DIYers that use it, get the proper stuff.

Scott35,
Is there any chance of you maybe making up a generic wiring schematic for the Tech Reference Area, with respect to basic Refrigeration installs?
At one time I used to be able to do these installs no worries at all, as the EC company I worked for about 10-odd years ago specialised in them, it's a funny thing, when you leave doing that sort of work, it's hard to remember just how it's all done.
If you need a hand doing this, flick me a PM, I can sort of remember what goes into a Reefer install. cool

Joined: Jun 2004
Posts: 1,273
T
Member
The spray foam is virtually identical to the expanded poly urethane of which the insulated walls are made of.

So the additional fire risk is nil.

Further the topside is corked by the 4-square.

As for an internal ignition source...

You'd be talking sabotage.

In which case, nothing we build is immune from that.

The purpose of the seal is to stop heat entry into the chiller. Expanded foam has to beat Chico for such a purpose.

In all my days, I can never recall anyone needing to add additional conductors to a chiller penetration.



Tesla
Joined: Oct 2000
Posts: 2,723
Likes: 1
Broom Pusher and
Member
Mike,

Quote



Scott35,
Is there any chance of you maybe making up a generic wiring schematic for the Tech Reference Area, with respect to basic Refrigeration installs?



Sounds good.

Could upload a few Plan Pages from some of the Cold Storage Warehouse Project Design / Engineering Jobs in my Archives.
The Plan Pages would be "PDF Plot Files", not AutoCAD Files, so anyone could view them.

Need to alter the Client / Contractor information in the Title Block, but this will not affect the layout.

I am thinking of these Plan Sheets to upload:

  1. Refrigeration Equipment Power Plan,
  2. Refrigeration Controls Plan,
  3. Details Sheet.


Hopefully I can upload these Sheets as PDFs, instead of a Graphic (Image) File Format.
The Sheets are to be Plotted on ARCH E size Media (30"x42"), so this might present issues if viewed directly in a Web Browser, as a Graphic (Raster) File Format.

If things work out well, viewing may be done in separate Browser Tabs, via a PDF viewing Utility or Plug-In.

Will reply with results.

-- Scott


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Joined: Oct 2000
Posts: 2,723
Likes: 1
Broom Pusher and
Member
Electrical Plan Set Sheets follow-up:

Successfully uploaded (3) PDF Plot Files for review.
thumbs cheers beer yay

Go to Electrical Planset- Refrigeration Equipment, at the Technical Reference Section, for viewing, download and descriptions of the Plans.

---edit note:
Will have to add descriptions later this weekend... I am supposed to leave soon for an event I just found out about!
dunno

A little background per the uploaded Drawings:

The Uploaded Electrical Plan Sheets are (3) of the Total (10) Sheets that comprise the Electrical Construction Plan Set, for an Electrical Design-Build Tenant Improvement Project performed last Year.
Project is for a well-known and repeat Business Client's new Regional Distribution Center.

The T.I. Project consists of new Cold Storage Facilities within an existing 462,000 Sq. Ft. Concrete Tilt-Up Warehouse Building.
Warehouse Roof Decking is between +45 and +55 Feet Above Finished Floor (A.F.F.).

The Square Footage of this Improvement covers 40,950 Sq. Ft.: 39,500 Sq. Ft. of the Building, and 1,450 Sq. Ft. of the exterior Loading Dock area, for the Refrigeration Equipment (Evaporative Condenser plus the Refrigeration Equipment Rack).

New +40ºF Loading Dock:
Area = 10,000 Sq. Ft.
Ceiling (Lid) Height = +24'-0" A.F.F.

New +34ºF Warehouse Cooler:
Area = 12,500 Sq. Ft.
Ceiling (Lid) Height = +40'-0" A.F.F.

New -10ºF Warehouse Freezer:
Area = 17,000 Sq. Ft.
Ceiling (Lid) Height = +40'-0" A.F.F.

This T.I. is more simpler than the majority of Projects I perform Design / Engineering work on, which is why I chose to use this Project for examples.

........................................................

The Uploaded Plan Sheets were from a "Conceptual" Design Development Plan set Version ("1st draft"). Electrical Plan set was later revised about 6 times due to Client, Vendor and Subcontractor Changes.

For the most part, changes were not too dramatic for the other Trades, but quite dramatic on my side. Revisions per Evaporator layouts affected not only the Penetration Points, but greatly affected the Lighting Layout.
The last Revision was strictly Lighting Fixture Placements - so as to clear the Proposed Fire Sprinklers' Layout.
The Fire Sprinkler Design Engineer and I worked together via E-mailed Layouts, for about 3 Days.
She was in Wisconsin, me in California.

Almost forgot... The Title Block Entries have been greatly edited, to remove Company / Client Information.
Title Block Text has been replaced with Humorous Client / Designer-Builder information.

---BTW---
I could upload the remaining (7) Plan Sheets if needed or preferred.
These Sheets are:

  1. Cover Sheet / Scope of Work,
  2. Site Plan / Building Footprint,
  3. Lighting Compliance Forms,
  4. 1 Line Diagram,
  5. Panel Schedules,
  6. Lighting Circuitry Plan,
  7. Lighting Fixture Layout / Dimensions Plan.


Feel free to reply with questions &/or comments.

I hope everyone enjoys the drawings.

-- Scott


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Joined: Oct 2000
Posts: 2,723
Likes: 1
Broom Pusher and
Member
El'BUMPO thumbs

Mike (Trumpy) and schenimann

Did you guys check out the uploaded PDF Plot Files?

Did anyone look at them???
dunno

Things got side tracked per the Sealant, so I am unsure if anyone has interest in this topic still.

-- Scott



Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Page 4 of 5 1 2 3 4 5

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5