How To Tell What Amp Service Is In Your House

If the shutoff says 125a you have 125 amp service.

Different homes need different amp services and you can use a bit of math to figure out what kind of electrical load your home requires. Inspect the gauge of the main service wire if you can see it. Six gauge copper wire. A 100 amp service is good for a home of less than 3 000 square feet that does not have central air conditioning or electric heat.

Many conduits are oversized so it s possible to have a 60 amp service entering your house in a 2 inch conduit. If you have a fuse panel if your home has fuses instead of breakers the panel will contain a main fuse block with an amp rating that identifies the total service size of your home. A 60 amp service for example is probably inadequate for a modern home. Look at the meterbase to your house.

The capacity of the transformer feeding your house the wire gauge used between the transformer and your house the size of the electrical meter box it has to safely support the conductor size. Look at the main disconnect breaker or fuses. If you have a double 100 amp breaker then you have a 100 amp service. The amp rating on this main circuit breaker identifies your electrical service size.

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