#100 AMP SERVICE WIRE SIZE UPGRADE#

THHN/THWN Wire: 200 Amp service allows for THHN/THWN in copper and aluminum.They are used to connect the electric meter to the main service panel. Service Entrance SER Cable: Service entrance cables for 200 AMP service are acceptable both in copper and aluminum.Types of Cables Suitable for 200 AMP Serviceīoth copper and aluminum cables can be used for 200 AMP service as long as size requirements are met. In industrial buildings, 200-AMP service may be enough for light manufacturing facilities with limited machinery ( small clothing production) and smaller storage facilities and warehouses, but the load calculations best be performed for good results. Tenant spaces within a larger commercial building with amp service only for the specific tenant's areaĢ00 Amp Service in commercial spaces is not enough for entire office buildings, restaurants or commercial kitchens, offices with server rooms, and gyms.Small workshops, studios, or warehouses.Small retail shops, offices, or cafes with limited electrical equipment.When it comes to commercial buildings, 200 AMP service can support small commercial spaces, namely individual tenants in a commercial building.Ģ00 Amp Service in commercial spaces is enough for:

#100 AMP SERVICE WIRE SIZE UPGRADE#

The upgrade to 200 AMP Service is necessary when you upgrade the service panel in a regular-sized private house. These houses have HVAC systems, electric appliances, electronics, EV car charger, electronics, and modern lighting systems. The service supports houses sized 3,000 to 3,500 square feet. It supports all kinds of electrical needs in a regular private home without an extremely large HVAC system. The conduit for wire for the 200 Amp Service should be at least 2 to 2,5 inches as there are three wires running at once.Ģ00-amp service is a standard type of service for regular-sized new homes.These are 350 MCM copper and 500 MCM aluminum. In this case, use cables with an ampacity of 250 Amps. You may choose to accommodate to NEC 220-2 rule that states that the maximum loading for any branch circuit is 80% of the rating.

For over a 150-foot distance, use 250 MCM copper wire and 350 MCM aluminum wire. For a a 100-foot distance, you may need to upsize to 4/0 AWG copper wire or 250 MCM aluminum wire, respectively.

If you plan to run cables for a long distance, you should accommodate a voltage drop of 3%.For grounding conductors, the minimum size for is 4 AWG for copper conductors, and 2 AWG for aluminum or aluminum-copper clad conductors.2/0 AWG copper wire is not completely out of the question, but its ampacity is 195 Amp-200 Amp, which will put it at a maximum load, so using 3/0 AWG copper is a better option.

Allowable ampacity of 3/0 copper wire is 225 Amp, while the allowable ampacity of 4/0 aluminum wire is 205 Amp. When installing a 200 Amp service, you will need at least 3/0 AWG copper wire or 4/0 AWG aluminum or aluminum copper-clad wire.

100 amp service wire size