Delivery of the main crushing plate means preparing the central axis that distributes electricity throughout the building. At the heart of the plate is the main crusher, a large key that controls the energy of the entire system and provides extra protection for all sub -circuits. This process includes the connection of the service wires received from the tool to the main lounges or the main crusher, then directing and securing all the circuit wires to individual fractures. Since errors can lead to electric shock, fire risk, or code violations, this task must be complied with national electrical law (NEC) and is usually dealt with by licensed electrician.
The necessary tools and materials
Main crushing panel
AFCI/GFCI) as needed
4 wire feeding cable (from a meter/semester)
Grounding
Stretch wire, screwdriver, torque pain
Voltage test
Fish bar (to pull the wires through the channel)
Electrical stickers or board guide
A manual lamp or work light (to see inside the painting)
advice: Maintains the headlights on your hands while working inside the plate container.
Step -step guide to record the main crusher plate
1. Turn on the energy on the main separation
If this is a sub -group, be sure to stop separating the main service before starting any work.
Always check by testing an unsalted voltage or a multiple scale that there is no effort inside the plate.
advice: Use the tag lock/hardware to prevent accidental reactivation during work, especially in the multiple factor environments.
2. Install the painting
Decorate the painting safely to the wall setting, ensuring that it is flat and fulfilling the nEC permit rules:
advice: Install a piece of plywood (Backer) behind the plate to get solid flexibility and flexibility in tapes or installation accessories.
3. Install the nutrition wires
From the meter or the main semester, bring a 4 connector service cable:
Black/red (hot) The wires go to The main bridges of the crusher
White (neutral) Go to Neutral bus
Nude/green (land) Go to Floor
In a main plate, neutral and ground tapes (electrically connected) are connected.
In a sub -Banil, neutrality and the earth should remain isolated to avoid dangerous current paths.
Use the properly size nutritional cables for Amprarage for the painting.
For example:
Leave An additional stagnation wire Inside the panel for clean guidance and future amendments.
advice: Avoid excessive curves. NEC recommends a Riming diameter of the curvature of the minimum of 5 x cable diameter For service connectors to reduce stress and high temperature.
4. Connect the Earth’s Pole
Run a Naked copper or green ground wire To suitable The basic electronic system:
at least 8 feet rod Paid
Connected using a Clamp
If the local code requires, install 6 feet rods have been separated
advice: ROD clearly determine or in your project record – this helps in future inspections or when checking the safety of grounding.
5. Install circuit breakers
Get the crushers in place on the bars of the plate
The course of each branch department Black (hot) Wire in his crusher
Call White (neutral) Wires Neutral tape
Call Nude/green (land) Wires Floor
to AFCI or GFCI cutters:
Hot wire (black) Go to “load” Script
Neutral wire (From the circle) goes to A neutral station on the crusher
The properties of the white crusher Go to The neutral bus bar for the painting
Incorrect weights these cutters disrupt their protection functions.
advice: Keep Hot and neutral wires of the same circle are combined With small postal code bonds, this reduces the overlap of the magnetic field and makes inspection easier.
6. Naming each circle
Clearly nampo each breaker based on its connected loads:
For example , “Kitchen Lights”, “Dried”, “HVAC”, “Living Room Ports”.
Use a printed guide or clarity.
advice: Also naming Each wire Inside the board using sticks of sticks or printed incendiary stickers. This greatly helps while exploring and fixing errors in the future.
7. The torque of all communications for the manufacturer’s specifications
use Screwdriver To tighten all the looked and stations as specified.
This step is very important, because Excessive It can lead to Bending or High temperature.
advice: Put a mark on each station with a Colorful point or an examination mark After torque – many inspectors expect a visual indication that the torque has been verified.
8. Check all the work before activation
Check that all wire end operations are safe
Make sure Screw Or the tape is installed if this is Main painting
check it out Neutral and land It is tied or separated properly, depending on the type of plate
use Voltage test To confirm everything safe
advice: use The bowl test with GFCI simulation To test new circles quickly for grounding, open neutrals, or reversing the polarity after activation.
9. Restore energy and test
Turn Main crusher
One by one, run each branch breaker
Use a bowl test or a multi -scale to check each connected device Correct and striped voltage
advice: Use this stage to test AFCI and GFCI. They must trip when you press the test button. Replace any boycott that fails to respond.
Additional NEC considerations
AFCI cutters Wanted for everyone Living areas (For example, bedrooms, family rooms)
GFCI cutters Required in Wet or wet sites (For example, bathrooms, kitchens, garages, external areas)
The boundaries of the channel’s filling and box box You must be taken into account
Use copper or aluminum wire Suitable for stations. Aluminum wires should be dealt with an antioxidant compound
Always follow Local modifications To NEC, consult your AHJ Local (Authority that has jurisdiction)
advice: Take pictures of your work at every stage. Inspectors and electricians will thank you in the future, as it is great documents for your records.
Disintegration
Unhealthy wires can lead to Electric shockand fireOr Violations of a dangerous blog.
Always check with Local code and Certified electrical rental If you are not fully coach or confident.
Types of cables used to deliver a major board
1. Ser Entrance Cable (SER)
It is used to bring energy from the meter base to the main plate
It includes two hot, neutral one, one land (4 connectors)
The common size is 4/0 aluminum for 200A service
Common sizes:
2. THN/Thwn-2 wires in the channel
Individual conductors are withdrawn via the channel (PVC, EMT, or flexible metal)
It is often used in custom commercial or dedicated installations (long -term, higher amproj boards, and open compositions).
It is allowed to separate the stages, neutrality and land of large or complex panels
Common sizes:
3. NM-B (Romex)
Used for the branch circles inside the building
It comes in packages (for example, 14/2, 12/2, or 10/3)
It includes black (hot), white (neutral) and naked land
Common sizes:
4. UF-B cable
Like NM-B but it was classified for direct burial
Used for sub -circuits to external subcategories, garages, or external boxes
Common sizes:
5. Mc Cable (Clad Metal)
Flexible armored cable used in commercial buildings or exposed interior
It includes individually isolated connectors with metal sheath
Often this is required by a symbol in multi -capacity buildings
Common sizes:
6. Nutrition cables (USE-2, xhW-2, or Triplex URD)
Common sizes:
1/0 xhw-2 or USE-2 In a channel for 150a nutrients
