. Handbook for rangers & woodsmen . Fig. -Branch-line wire. Fig. 41.—Branch-iiue conuection. Hard-drawn copper wire. LIGHTNING RODS These are of the same gauge wire as the hne wire and areattached to the poles before the latter are set. They are cut 33^feet longer than the pole to which they are to be stapled and a6-inch length is allowed to project beyond the upper end, or pastthe ridge of the pole roof. This is then bent back and twistedabout itseK, leaving a 3-inch extension above the pole. Theextra 3-foot length is coiled or wound about in the shape of aclock spring an
. Handbook for rangers & woodsmen . Fig. -Branch-line wire. Fig. 41.—Branch-iiue conuection. Hard-drawn copper wire. LIGHTNING RODS These are of the same gauge wire as the hne wire and areattached to the poles before the latter are set. They are cut 33^feet longer than the pole to which they are to be stapled and a6-inch length is allowed to project beyond the upper end, or pastthe ridge of the pole roof. This is then bent back and twistedabout itseK, leaving a 3-inch extension above the pole. Theextra 3-foot length is coiled or wound about in the shape of aclock spring and is stapled to the squared-off butt of the pole. Thewire is then stapled along the pole one-quarter of the way aroundfrom the insulator. It must not be allowed to come in contactwith the hne \\dre or grounding -wiU be the result. Ordinaril}one should be attached to every tenth pole, but if the line followsa route which is greatl} exposed to atmospheric disturbancesone should be supphed at every fifth pole. 48 HANDBOOK FOK RANGEK
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