The customer does not need to be familiar with utility interconnection
standards unless, of course, the customer is installing the PV system. Most states
and utilities require a licensed bonded and insured contractor for installation.
You cannot proceed without that license.
It is also up to the customer to comply with utility interconnection guide-
lines. The agreement is between the utility and the customer, not the utility and
the installer.
Permits and Codes
Once a customer has decided on installing a PV system, they must adhere to
national, state, and local building or electrical code. Permits are required from the
PV site city or county, maybe even both prior to installation.
Customers must check with the PV installer about the required permits and
their costs. They must make sure that the contractor is properly licensed, bonded,
and insured, and is competent to do the work. The contractor usually gathers all
the necessary documentation for the permits. Permit costs usually are based on
the entire PV project cost.
Utility and Inspection Sign-offs
After your new PV system is installed, a building or electrical inspector checks the
PV system to make sure it is up to code. The AHJ gives approval for PV system
operation if the system meets the requirements. The local utility also has to con-
sent in order to start PV system operation.
Based on the inspection outcome, corrections may have to be made. In order
to satisfy the inspector and establish a well-performing PV system, make these
corrections immediately. Then call for reinspection. All the rebate programs
require a copy of the inspection approval.
The utility, city, country, or state rebate program often requires a copy of the
inspection approval.
PV System Warranties
Not many PV systems have at least a five-year, full-system warranty against flawed
parts and workmanship on the system. Some states have weak warranty require-
ments. Other states are more stringent. The manufacturer warranties may or may
not cover full replacement cost for all malfunctioning equipment. Those warran-
ties may not cover the shipping costs. They also may not cover labor costs associ-
ated with replacing the faulty part. More often than not, those warranties are
weak to protect the manufacturer.
Trying to get those kinds of warranties honored can be a challenge. Know
your manufacturers and their warranties. Research their warranty history with
customers. Some warranties are good; many are dreadful. All must be
220 ADVANCED PHOTOVOLTAIC INSTALLATIONS
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