As discussed in Part 1, apartments built prior to the 1950s are desirable for their looks, but have original electrical equipment and wiring that are outdated. They typically need upgrades to meet current power demands and safety requirements. Part 2 will discuss 220-Volt Appliances, Sizing the Upgrade, and Protection System.
As the apartment owner, you may have the option of buying either the 110V or 220V version of a water heater. If you want to save on utility bills, selecting the 220V version will decrease power consumption by 50%. Let’s assume that it is a 3.3 kilowatt (3,300W) water heater. Check out the 15-amp difference in the comparison of the two voltages below.
• 110V = 3,300W / 110V = 30 Amps
• 220V = 3,300W / 220V = 15 Amps
In addition to requiring more electricity, the 110V water heater will need a larger cable, and the circuit will generate higher temperatures. Breakers will tend to trip with more frequency, and affected electrical components may be damaged.
Sizing the Upgrade
By installing ENERGY STAR appliances that are 220V when available, LED lighting, and an energy efficient HVAC system, the total electrical demand of an apartment will be greatly decreased.
Afterwards, your electrician can size the new installations for each apartment in terms of load. Being energy efficient will lower the capacities required of the electric panels, circuits, and breakers, reducing the costs of the upgrade.
Some older apartments may still be equipped with fuse boxes, which are outdated and often do not have replacement parts after being discontinued by their manufacturers.
Another disadvantage is the need to replace a fuse after it is blown by a short circuit or overload. Until it is replaced, the circuit will not have any power. In contrast, a circuit breaker can be soon reset after they trip, restoring electricity.
Insurance companies will typically also charge a lower premium if a residence replaces a fuse box with a modern electrical panel with circuit breakers because it is considered to be a safer protection system.
Electrical Peace of Mind
Providing professional electricians since 1988 in Maryland, Cook Electric is the company you can rely on for all your electrical service needs. For knowledgeable, fair, honest, reliable, and conscientious service, call Cook Electric today at (410) 266-9040. We will be very glad to help you.