400 Amp Service Grounding Diagram
Some areas do require the use of ct current transformer metering for a 400 amp service. Connect the grounding electrode conductor to the ground bus.
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Ing electrode and the grounding electrode at the service main shows that some current will flow through the earth but the earth is not part of the effective ground fault current path.
400 amp service grounding diagram. To make the connection slide the end of the grounding electrode conductor through one of the holes in the bus and tighten the screw in that hole until it holds the wire very tightly. Temporary services are usually 120 240 volts singlephase 200 amperes. Grounding bonding 2 in our example the service equipment for the home is the 200 amp main breaker panel.
Metering for 400 amp services or less. This type of meter base uses a transformer in the panel to step down the power before it flows through the meter. Ozeng thanks for the information the soil is red clay with plenty of iron in it so there shouldn t be a problem there the local building code chart guide only goes to 200 amp it doesn t specify ground rod size just a depth of at least 4 in the ground and using 4 copper for the ground wire the circuit length to the rod and back is 20 the typical ground rod size that is sold locally for a.
Your local grover s sales team can advise you if this is the case in your area. Grounding electrode system utility transformer service conductor service disconnect feeder branch circuit sub panel main bonding jumper 250 102 c grounding electrode conductor 250 66 grounding electrodes 250 50 bonding of devices 250 134 t250 122. The effective ground fault current path is intended to help remove dangerous voltage from a ground fault by opening the.
The most common use of temporary service is to deliver power during the con struction phase of a project. Grounding and bonding table 250 66 table 250 122 part iii. Temporary service is defined as electric service to a site for less than one year.
However if this 200 amp main breaker panel can t be immediately installed on the. The ground bus is where all the ground and neutral wires are attached in the electrical panel. When the project is complete the temporary service is replaced by permanent service.
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