Title: ENHANCING EFFECTIVE EARTHING IN ELECTRICAL DOMESTIC INSTALLATION AMONG GRADUATES OF TECHNICAL COLLEGE IN IMO STATE, NIGERIA

Authors:
Law-Obi, Fidelia N. & Ogwumike, C.M.C.

Abstract: Abstract The study investigated the techniques required for enh0ancing effective earthing in electrical domestic installation among graduates of Technical College in Imo state, Nigeria. Three research questions coupled with one hypothesis were answered by the study. Descriptive survey design was used to carry out the research in Owerri Education zone of Imo State. The population of the study was comprised of 29 Polytechnic Electrical Technology lecturers from the zone and 61 electrical workers (Technologist Technicians and Craftsmen) with Owerri Zone Enugu Electricity Distribution Company(EEDC) formerly PHCN. There was no sampling, intact population was used. The questionnaire was designed by researchers tagged „Effective Earthing Techniques in Domestic Electrical Installation(EETDEI) was used for data collection with 22 items questionnaire, validated by three experts and also pilot tested outside the research zone. Cronbach alpha was used to establish the internal consistency of the instruments which yields 0.87. The questionnaire was administered and 87 copies of the questionnaire were returned. Mean and Standard deviation were used in analyzing the research questions while null hypothesis was tested at 0.05 level of significance using Z-test. Results of the study revealed that 7 items earthing points/parts and materials, 8 items method/process of earthing and 7 items test modalities were identified as the needed earthing techniques for effective electrical domestic installation and there was also no significant difference between EEDC electrical workers and Electrical Technology lecturers on the required effective techniques for enhancing earthing in domestic installation. Consequently, it was recommended that using real building is required for teaching student earthing practically and not board practice, enough time should be given to students for practice and a set of earthing tests must be carried out on a new installation with test instrument. Keywords: TVET, Earthing, Electrical Installation, Testing.

Publication Date: 2018-12-06