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  • Can you get 3 phase power out of two single phase pole mounted . . .
    You can only get three-phase using two transformers if the primaries of the transformers are connected to a three-phase source i e , transformer 1 to A-B, Transformer 2 to B-C phases then you can connect them open-delta and get three-phases on the secondary
  • Single Standby Generator for Two Meters? | Information by Electrical . . .
    I have client that owns a small building that was originally two suites He is interested in having a standby generator installed, as we are in Ca and will be having intermittent power outage for the next 5-10yrs The building has single service drop that goes into a gutter then to two
  • Grounding requirements for multiple services | Information by . . .
    is connected to a grounding electrode in or at a building or structure, the same electrode shall be used to ground conductor enclosures and equipment in or on that building or structure Where separate services, feeders, or branch circuits supply a building and are required to be connected to a grounding electrode (s), the same grounding
  • 3 wire feeder to separate building? | Information by Electrical . . .
    An equipment grounding conductor, as described in 250 118, shall be run with the supply conductors and be connected to the building or structure disconnecting means and to the grounding electrode (s) The equipment grounding conductor shall be used for grounding or bonding of equipment, structures, or frames required to be grounded or bonded
  • grounding a sub panel at a separate building | Information by . . .
    Re: grounding a sub panel at a separate building If its a sub panel that is fed out of a main panel your grounding would be either your conduit or other recognized method Art 250 118, you don't treat it as a seperate service, all your main grounding should be at the first point of disconnect, at the sub-panel you would not bond the grounded conductor
  • Cold water pipe grounding and bonding requirements
    If the water pipe coming into the building qualifies as a grounding electrode which it sounds like it does, it has to be connected to the panel board in the house which will have the neutral and ground unbonded I don't know what the inspector is thinking
  • Ground rods at separate building garage storage building.
    Are ground rods required at a separate building which is fed by a two pole breaker at a building near by? The new separate building is being fed by two ungrounded conductors, grounded conductor, and equipment grounding conductor This goes into a small two space panel disconnect From there the
  • Power Strips - Code Violation | Information by Electrical Professionals . . .
    intended to be series connected (daisy chained) to other relocatable power taps or to extension cords So according to this you are not suppost to dasiychain the power strip to an extention cord Relocatable power taps are not intended to be permanently secured to building structures, tables, work benches or similar structures, nor are they
  • Exit lighting on separate circuit | Information by Electrical . . .
    I have a client who insists that exit signage and exit lighting must be on a separate circuit from the local lighting I would argue that this means, when the local circuit breaker blows, the Frog-Eyes (battery emergency exit lights)may not come on, because they are on a different circuit Of
  • fire pump on backup generators | Information by Electrical . . .
    I have a 210,000 sqft building going in with a use group F1 The Electrical Engineer is asking me if the fire pump needs to be on emergency generator with the emergency lighting I can't find anything in any codes requiring this Any thoughts from any one? Thanks





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