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Figure 3-7.—Methods of soil treatment for lowering of ground resistance. | Up
Construction Electrician Basic - Electricity handbook for electricians | Next
Phase Sequence Indicators |
4. A combination of methods may be
advantageous and necessary to provide desired ground
resistance. A combination of multiple rods and soil
treatment is effective and has the advantages of both of
these methods; multiple long rods are effective where
conditions permit this type of installation.
After you are sure you have a good ground, connect
the clamp and the ground cable to the top ground rod
section (fig. 3-6, view B), and secure the connection by
tightening the screw.
CONNECTIONS
A typical generator set is outlined in figure 3-8,
showing the load cables and output load terminals.
WARNING
Before attempting to connect the load
cables to the load terminals of a generator set,
make sure the set is not operating and there is no
input to the load.
Refer to figure 3-8 as you follow this procedural
discussion for making load connections.
1. Open the access door and disconnect the
transparent cover by loosening six quick-release
fasteners. Remove the wrench clipped to the cover.
NOTE: Be sure to maintain the proper phase
relationship between the cable and the load terminals;
that is, A0 to L1, B0 to L2, and so forth.
2. Attach the load cables in the following order:
L0, L3, L2, and L1 as specified in step 3 below.
Figure 3-8.—Load cable connections.
3-12
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