The effects on the telegraph system were because they were made up of miles long conductors, so when the CME hit it induced current in these wires. Some operat

The effects on the telegraph system were because they were made up of miles long conductors, so when the CME hit it induced current in these wires. Some operators reported being able to send messages without their batteries connected. The telegraph system typically used milliamps of power (at a few hundred volts), so it's pretty much nothing compared to the electrical system in your home. That and the shorter wires, I doubt you'd even notice it.