Electrical Wiring
(reprinted with permission from Grinnell Mutual Reinsurance Company, I-80 & Hwy 146, Grinnell, Iowa 50112)

1. If coming into the building above ground, make the electrical service into the building with proper entrance cable through an approved weatherhead with adequate drip loops.

2. Interconnect the electrical service entrance ground to the lightning rod and telephone system ground, if within six feet of each other.

3.  Provide an independent ground rod for the electrical service entrance of each major building, to provide life safety and protection of the electrical system from lightning damage.

4.  Wiring should be sized to carry the expected load on the circuit. It is recommended that the wiring not be smaller than a copper size #12 AWG wire.

5.  All electrical connections should be made in junction boxes with solderless connectors or soldered and taped.

6.  Bare overhead electrical power lines should be replaced. Insulation on all wiring should be in good condition.

7.  Low overhead electrical power lines that may come in contact with farm machinery moving under them should be raised or buried underground.

8.  Copper electrical wiring should be fused according to the following table:

Wire Size

Fuse Size

# 14

15 AMP

# 12

20 AMP

# 10

30 AMP

# 8

40 AMP

9.  Electric drop cords should be removed and permanent electrical circuits installed.  Sufficient outlets should be installed in each building or room.

10.  Replace worn and damaged electrical cords on appliances, tools, and motors.

11.  Have all electrical wiring done by a qualified electrician in accordance with the National Electrical Code.

12.  Livestock and poultry buildings should be wired in accordance with the National Electric Code (NEC) Article # 547 using dust, moisture and corrosion resistant electrical components.

13.  Ground-Fault Circuit Interrupters (FGCI) should be installed in areas where the area is damp and wet by reason of periodic washing, where water is present periodically, or where similar conditions exist.

14.  The electrical power supplier should be requested to inspect the electrical apparatus of the auxiliary generator.

15.  All electrical equipment and devices should be properly grounded using a three-wire system to reduce possible damage from lightning and for purposes of life safety for animals and humans.