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AIR 40, AIR Breeze, AIR 30, AIR MaX, AIR X MARINE and AIR SILENT-X are trademarks of Primus Wind Power 2013 Primus Wind Power Inc. AIR Owner’s Manual 3-CMLT-2020 REV-A / 2-26-21 28

TURBINE GROUNDING

Proper grounding of the AIR wind turbine protects people and equipment by

eliminang dangerous voltage potenals.

The following secon describes tower grounding in detail. To ground the

AIR body, connect the ground (green) conductor to the tower ground

rod. Alternately the ground (green) conductor may be connected to the

negave (black) conductor in which case it will be grounded through the

baery bank ground rod. Refer to Figs. 8 -11.

Note that all system grounds should be connected using conductors of the

same size as the posive and negave wires.

If you choose to not set up an earth ground system (not required for sys-

tems under 50 volts), the green and black conductors MUST be connected

to each other or severe damage to the turbine may result and void your

warranty.

Primus Wind Power strongly recommends that boat installaons be

grounded according to American Boat and Yacht Council recommenda-

ons. There are special grounding requirements for boats, in parcular

boats that connect to shore AC power, that MUST be observed or a seri-

ous shock hazard may result. Contact the American Boat and Yacht Council

at +1 410.990.4460 or at www. abyc.com.

TOWER GROUNDING (Fig. 16)

Every wind turbine and tower should be grounded at the tower base even

if the turbine is grounded at the baery bank or service panel by means of

the yaw ground lead.

The following secons are a guide and should not be considered compre-

hensive. Reference the Naonal Electrical Code (NEC) and local building

and zoning regulaons for complete requirements. Relevant secons of

the Naonal Electrical Code are referenced.

ELECTRODES DRIVEN IN SOIL

Electrodes must be a minimum of 8  (2.5 m) in length and free of non-

conducve coangs such as paint. Hollow (pipe or conduit) electrodes

must not be smaller than trade size 3/4 (metric designator 21) and must be

galvanized or otherwise protected from corrosion. Solid rod electrodes

must be at least 5/8 inch (16 mm) diameter. Stainless steel rods less than

5/8 inch diameter, nonferrous rods or their equivalent less than 1/2 inch

diameter shall be “listed” by an organizaon having jurisdicon in the area.

For example: UL in the USA and CSA in Canada.

Electrodes shall be installed such that 8  (2.5 m) is in contact with the soil.

They should be driven into undisturbed soil within 1  of the tower foun-

daon. If rock is encountered the electrode may be driven at an angle

not to exceed 45 degrees from vercal. Some local authories permit buri-

al of the electrode in a trench at least 30 inches (76 cm) deep.

The upper end of the electrode including the grounding conductor should

be below grade. If above ground it must be protected from damage.

Bonding the grounding conductor to the electrode and to the tower may

be accomplished by exothermic weld or by a “listed” mechanical connect-

or. Solder connecons are not permied. Most local authories require a

minimum grounding conductor size of 6 AWG for copper and 4 AWG for

aluminum (if aluminum is permied).

The grounding conductor may be buried directly or contained in conduit. It

is important to have no sharp bends to keep its inductance low.

POSITIVE GROUND

The AIR wind turbine has been used and tested successfully in

a baery posive “earth ground” conguraon. See our FAQ sec-

on on our website at www.primuswindpower.com / FAQ for