INFORMATION SERIES: Common Electrical Concerns

Visible rust in a panel (main or sub) indicates prior water or moisture penetration and may indicate the presence of hidden damage which could present a potential hazard. If there is any evidence of rust in the panel, a thorough inspection by an electrician should be arranged as a precaution.

GROUNDING AND POLARITY
A continuous electric ground must be provided from all points in the system with a secure connection from the panel to a ground rod or an approved element. This ground should not be dismantled or disconnected for any reason.
Electrical receptacles (two prong) without grounding provisions do not allow for the use of certain appliances or the proper grounding of the appliance without installing a three prong adapter. Ultimately, replacement with a three prong grounding in high use locations may be required or desired. IN some situations rewiring of the circuits may be necessary to provide a continuous ground path. If a spot check of the system has indicated improper grounding in areas, immediate correction of the condition is required for proper protection throughout the system. A check of the entire system is recommended as a precautionary measure whenever grounding concerns are indicated.

Reversed polarity will occur when the hot and neutral lines to a receptacle are reversed. While such a receptacle will function, the potential for electric shock exists and the condition should be rectified.

In the event that electrical work is required, the HouseMaster Technical Staff recommends that only a licensed electrical contractor performs any/all work.

ELECTRICAL SERVICE
For the average house, 100 ampere service is the minimum acceptable service for present day electrical needs. For the modern family using many electrical appliances, 150 ampere service would be more appropriate. Generally, any upgrading of major appliances or additions to the house will necessitate increasing the capacity, the panel and/or household service.

The service lines which carry the electric power from the utility company's lines to a house can be buried or run overhead. Overhead electric lines should have adequate clearance over all points on the property and the house. The clearances are vital to avoid accidental contact by hand or a metal object (ladder, poles, etc.). Service lines/house connections should be maintained to reduce the chance of failure, a damaged electric service line or connection presents a potential safety hazard due to exposed wires and/or the potential for water seepage into the meter or panel connections. The utility company usually is responsible for any repair or adjustment of the service line to the house.

ELECTRIC PANEL
The panel box contains the connection between the power line and the house wiring. the house circuit connections, the power cut of(s) and the overload protection (circuit breakers or fuses). It is advisable to identify and label all circuits in the electric panel (including GFCIs when applicable) so that a particular circuit can be readily located in an emergency or for servicing needs. It is generally recommended. and often required, that there be one main disconnect (cut-of) to shut down the house's electrical system quickly and easily. If there is no main disconnect, consideration should be given to providing a main disconnect, particularly if there are numerous circuits.

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