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"This new edition gives ring final circuit calculations, test procedures and interpretation of results, testing of 3 phase motors, risk level calculations for surge protection, and updated PV calculations to include self consumption. For Level 3 courses, updated with the 18th Ed…
"In line with the 18th Edition of the Wiring Regulations, it now gives a worked example of resistivity and more on disconnection times for fuses and circuit breakers. For foundation level electrical installation courses, and essential calculations for professionals, with a gloss…