By Paul Rosenberg
That is why, specifically if you are no longer an electrician, you wish the transparent, well-ordered assistance during this book-the similar one you might have obvious on your father's toolbox. Now absolutely up to date to hide domestic networking and different twenty first century advancements, this all-new variation delivers the tips, principles, and step by step directions you must do the activity appropriately and with self belief.
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Extra resources for Audel: House Wiring
SPLICES APPROVED JUNCTION BOX SEAL SERVICE LATERAL Figure 2-18 A splice in an underground system. Service Entrances and Equipment A portion of this subject was covered earlier in the chapter. Figures 2-13 and 2-16 showed, respectively, service masts and the conductors from the tap to the service drop, on down to the meter. From this point to the service equipment the conductors are service-entrance conductors. 46 allows service-entrance conductors to be spliced, but except for very specific applications, this is almost never allowed.
4 OR LARGER COPPER IN CONTACT WITH EARTH, CONCRETE FOOTING, OR FOUNDATION Figure 2-30 Bare copper wire encased in concrete and used as a grounding electrode. TIE WIRES 2 IN. MAX. 3 TO 4 FT. FOOTING EXCAVATION 3 ⁄ 8 IN. REBAR 1 FT. LONG Figure 2-31 Using rebars to improve the grounding effectiveness of a copper wire encased in a concrete footing or foundation. electrodes specified in (A) through (D) below shall be used. [(A) through (D) not reproduced here; please refer to the NEC] Where practicable, made electrodes shall be embedded below permanent moisture level.
Secondly, motors may draw unusual levels of current if operating improperly.
Audel: House Wiring by Paul Rosenberg