What is the minimum size required for a communication system grounding electrode conductor?

What is the minimum size required for a communication system grounding electrode conductor?

14 AWG

Why is the earth not considered an effective ground fault current path?

The earth is not considered as an effective ground- fault current path. The resistance of earth is so high that very little fault current returns to the electrical supply source through the earth.

Which NEC table is used for sizing grounding electrode conductors and bonding jumpers?

Table 250.102(C)(1) Sizing Grounded Conductors, Bonding Conductors, and Bonding Jumpers. Supply-Side grounded and bonding conductors are sized from Table 250.102(C)(1) in the 2014 NEC.

What is the largest size copper grounding electrode conductor required by the NEC?

3/0 AWG

What size copper equipment bonding jumper is required for a 200 amp panelboard?

The bonding jumper is to be sized using Table 250.66. For 200 ampere service, you’ll probably be using 4 AWG copper or 2 AWG aluminum. For gas piping, you can bond it to the same things as mentioned for water piping.

What size ground do you need for a 200 amp panel?

Per Article 250 of the NEC , The minimum size for a grounding conductor for a circuit protected by a 200 amp breaker is #6 copper or #4 Aluminum. This conductor may need to be increased in size for any of several reasons, including the length of the run, available fault current or other reasons that would fill a book.

How much does it cost to have a 200 amp service installed?

Cost to Upgrade to a 200-Amp Service A homeowner should expect to pay between $750 and $2,000 to upgrade an existing unit to a 200-amp service, including professional install. Alone, a 200-amp box will cost $100 to $350. In comparison, a 150-amp version runs between $50 and $200.

What wire goes from meter to house?

Metal conduit used on the pole and house requires a 3 wire cable plus a ground wire bonded from the metal conduit to the meter box on the house or the service panel.

Are two ground rods required?

If it has a ground resistance of 25 ohms or more, 250.56 of the 2005 NEC requires you to drive a second rod. When using the typical 8-foot or 10-foot ground rod, you get the best results by spacing the rods at least 16 or 20 feet apart, respectively. This is much greater than the Code minimum 6-foot spacing.