The voltage commonly supplied to a residence by the local utility is?

That depends on where the residence is located. There are a number of different

nominal utility supply voltages in use throughout the world.

Here are the various voltages, with a few examples of where each is used:

240V / 50 Hz

Fiji, Kuwait, Malaysia, Nigeria

230V / 50 Hz

Albania, Australia, France, Israel

220V / 50 Hz

Morocco, Argentina, China, India, Russia

127V / 50 Hz

Madagascar, Libya

127V / 60 Hz

Brazil, Saudi Arabia, Mexico

120V / 60 Hz

USA, Liberia, Canada, Venezuela

115V / 60 Hz

El Salvador, Trinidad & Tobago

110V / 60 Hz

Jamaica, Cuba, Panama, Taiwan

100V / 60 Hz

Japan, Okinawa