Exam 9: Services and Electrical Equipment

A one-family dwelling service disconnecting means must have a minimum rating of ____.

Service-entrance and overhead service conductors shall be arranged so that ____.

Conductors must have a vertical clearance of at least ____ ft above the roof surface.

The ampere rating of any circuit breaker rated at ____ amperes or less, and 1000 volts or less, must be molded, stamped, etched, or similarly marked into the handle or escutcheon area.

Concrete, brick, or tile walls are recognized as ____.

All switchboards, switchgear, panelboards, distribution boards, and motor control centers must be located ____ and must be protected from damage.

Fuseholders for current-limiting fuses must not ____.