copy and paste this google map to your website or blog!
Press copy button and paste into your blog or website.
(Please switch to 'HTML' mode when posting into your blog. Examples: WordPress Example, Blogger Example)
Input Form:Deal with this potential dealer,buyer,seller,supplier,manufacturer,exporter,importer
(Any information to deal,buy, sell, quote for products or service)
Definition of Electrical Vault vs Electrical room | Information by . . . 110 31 A defines the fire resistivity of Electrical Vaults - what constitutes a vault vs an electrical Room - The only Vault Definition is in 450 III for Transformer Vaults - are there any other definitions of vault in the NEC?
Sizing a Manhole Electrical Vault | Information by Electrical . . . Can someone point me in the correct direction for sizing a manhole electrical vault I have 2 runs of (12) 2 1 2 Conduit coming from the utility transformer into the building We are trying to install a manhole electrical vault before entering the building We will be installing duct bank from
High Voltage Manhole or pullbox | Information by Electrical . . . The vault we were dealing with had been in place for about twenty years The top is flush with grade and surrounded by asphalt I assume that these things are intended to have the top flush with the grade because otherwise you would need a vertical extension from the top to the manhole at grade level
Confused! Grounding high voltage electrical vaults Re: Confused! Grounding high voltage electrical vaults What is the primary voltage in the substation? I am guessing the primary is 138 kV and the secondary is 13 2 or 12 47 kV At 138 kV, if a phase came down, was faulting to the earth, and you were reaching for the control house door, what would be the step-touch potential? The owner is trying to create the best possible return path to
Over 600 volts clearances and construction | Information by Electrical . . . Q1: According to the 2005 National Electrical Code, no, 110 31 (A) does not dictate that all interior rooms, spaces, areas, etc containing conductors and equipment over 600 volts be constructed as an Electrical Vault in accordance with this section
vaults | Information by Electrical Professionals for Electrical . . . This might be a dumb questions but can somebody tell me what an electrical vault is used for? I think of a concrete room, underground, where a bunch of distribution lines are fed, connected, etc Is there more to them than this? What else are they used for?
What is a vault??? | Information by Electrical Professionals for . . . They are saying they consider this a vault and that this is ok even though the contract says to run raceway full length and that it matches existing, which they pulled out then re-ran after the new switchgear was in place The only place I can find a definition of a vault is 110 31A and that is for over 600V--This is all 480V
Medium Voltage Pull Box Sizing | Information by Electrical . . . The cable trench is only intended for pulling and routing cables The only personnell entry required will be what is necessary for pulling and racking The trench will only be 5'-6" deep, not enough for "personnel entry" as in the case of a manhole or vault, so i don't think 110 74 would apply