Definition: Heavy Up is one of those peculiar, specialized terms in the world of home renovation and electrical systems. Essentially, it means to increase the amperage coming into your house, so that your electrical system can handle today's appliances, lights, computers, TV's, etc. A typical heavy-up is one in which an older house needs to be upgraded to 200 amp service, which is the standard now.
A heavy up is a fairly major undertaking, requiring the services of a licensed electrician, since it entails replacement of the entire service panel.
Alternate Spellings: heavy-up, heavyup
Examples:
After they bought their 1897 Victorian, Jim and Marissa found that they would not only need to replace their knob-and-tube wiring, but would have to heavy up their service in order to power their new 60" flat screen TV.
