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  • 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
  • Lightning Protection - Structural Steel Bonding
    I have a 22 foot tall single story building with structural steel frame and a metal hip roof I wanted to limit roof penetrations so I routed the lightning protection down conductor on the outside of the building I am not routing down conductors inside structural steel columns as noted in NFPA
  • Whole Building Generator - Emergency Lighting
    My question though; what is the correct way of connecting providing emergency lighting if the whole building system is fed from the generator? We would still need the emergency and optional standby transfer switches, but the entire building would be optional standby
  • Service Grounding when installing a meter disconnect
    Service Equipment The necessary equipment, consisting of a circuit breaker (s) or switch (es) and fuse (s) and their accessories, connected to the serving utility and intended to constitute the main control and disconnect of the serving utility (CMP-10) [ quote] The term "service disconnect" is not a defined term in Article 100 [ QUOTE] Correct, and that makes everything up to the building
  • Using Building Steel to Ground Stuff - Mike Holts Forum
    Metal covers and metal fittings attached to these metal enclosures shall be considered as being connected to bonding jumpers or equipment grounding conductors, or both " So, if someone wants to connect (bond) a metal storage cabinet to the building steel, would you call it a bonding jumper or an equipment grounding conductor?
  • Grounding 2 services together | Information by Electrical Professionals . . .
    All grounding electrodes as described in 250 52 (A) (1) through (A) (7) that are present at each building or structure served shall be bonded together to form the grounding electrode system Where none of these grounding electrodes exist, one or more of the grounding electrodes specified in 250 52 (A) (4) through (A) (8) shall be installed and
  • Demand VS Connected. What to use? | Information by Electrical . . .
    Demand loads are already probably double whatever the meter will read and the connected load is even higher than that They utility has a better handle on how much actual load each building building types are using since they have the data to run the statistical analysis on it
  • Grounding electrode conductor vs EGC vs Bonding jumpers
    In my head, the grounding electrode conductor is the connections between building steel and the ground rod and all my connections for equipment, pipes, floor pedestals, ETC tied back into the GTB would be bonding jumpers or EGCs Any help clarifying this would be greatly appreciated
  • Water main grounding | Information by Electrical Professionals for . . .
    Hello, some jurisdictions in my area are requiring us to bond the water within 5 feet of the building entrance They are saying that this is not an option under any circumstances The way that I interpret the code I only have to do that if I’m wanting to use it as a grounding conductor to
  • Transformer Grounding (Separate Derived System)
    (a) If ground rods are provided, must they be connected to the building grounding electrode system to comply with 250 50 ? (b) If a water pipe is used, must that connection be made within 5 ft of the entrance to the main building if the exception to 250 52 (A) (1) can not be used ?





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