Electricity Level 3, Section 1

A noncontinuous load of two 120V outlets for heavy-duty lamp holders would have a load of

1,200VA

When space heating equipment uses electric resistance heating elements, protection for the resistance elements must not exceed

60A

What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V, 3○?

65A

What is the required circuit ampacity of a noncontinuous, single phase load of 8.5kW at 277V?

30.69A

What is the demand load for one household range with a nameplate rating of 11.75kW, 240V, 1○?

8kW

The load for 10' of multi-outlet assembly used to supply several loads simultaneously is

1,800VA

The maximum size dual-element fuse for a 40hp, 3○,460V motor with a Design Letter D is

100A

What is the load center length for a branch circuit with no continuous loads of 20A at 60' from the source and 50A at 125' from the source?

106.43'

According to the NEC, the total load of show windows must be calculated at not less than

200VA per linear foot of show window

Air conditioning overcurrent protective devices can never exceed what percentage of the motor-rated load current or the branch circuit selection current (whichever is greater)?

225%

The NEC requires that the ampacity of branch circuit conductors be derated when there are more than how many current-carrying conductors in a raceway?

3

What is the ampacity of a water heater with a nameplate rating of 7,200VA at 240V?

37.5A

What is the current-carrying capacity for No. 6 THWN aluminum conductors in conduit run through an ambient temperature of 38°C?

44A

What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100' long, using copper conductors of 6,530 circular mils with a noncontinuous load of 13A?

5.14V

Continuous loads are calculated at what percentage of the maximum current rating of the overcurrent device?

80%

The demand load for four pieces of commercial cooking equipment is

80%

A sign load cannot exceed

80% of the branch circuit rating

Conductors must be derated when installed in conduit

on or above rooftops

For resistance welders, the rating for the overcurrent protection device should not exceed what percentage of the primary current rating of the welder?

300%

What is the total load required by the NEC for two appliance branch circuits plus a laundry branch circuit?

4,500VA

What is the feeder load (in VA) for three small appliance branch circuits?

4,500VA