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Philippine Electrical Code Wire Size Table - Fpn no. 1: see annex b, table b.Three.10.1.11, for adjustment factors for greater than three modern-day-sporting conductors in a raceway or cable with load diversity. Fpn no. 2: see 18.104.22.168(a) for correction factors for conductors in sheet metallic auxiliary gutters and 3.Seventy six.2.Thirteen for correction factors for conductors in metallic wireways.
Conductors used for direct burial applications will be of a type identified for such use. Cables rated above 2 000 volts shall be shielded. Exception: nonshielded multiconductor cables rated 2 001– 5000 volts will be accredited if the cable has an usual metal sheath or armor.
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Exception no. 2: conductors in sizes smaller than 50 mm 2 shall be permitted to be run in parallel to deliver manage energy to indicating units, contactors, relays, solenoids, and similar manage devices, supplied all of the following apply:.
Conductors that are meant for use as ungrounded conductors, whether used as a unmarried conductor or in multiconductor cables, shall be completed to be absolutely distinguishable from grounded and grounding conductors. Distinguishing markings shall no longer conflict in any manner with the surface markings required by way of three.10.1.11(b)(1). Branch-circuit ungrounded conductors will be identified according with 22.214.171.124(c). Feeders will be diagnosed in accordance with 126.96.36.199.
Exception no. 4: derating elements shall no longer practice to underground conductors getting into or leaving an outdoor trench if the ones conductors have bodily safety inside the shape of rigid steel conduit, intermediate metal conduit, or inflexible nonmetallic conduit having a duration no longer exceeding three 000 mm and if the wide variety of conductors does not exceed 4.