Question

1. which of the following types of outlets require gfci protection on construction sites?

a) 120 - volt, single - phase, 15 - and 20 - ampere outlets
b) 240 - volt outlets
c) only outlets used for power tools
d) all outlets that are part of the permanent wiring system

1. flexible cords must be marked with their nec rating code every _____.

a) 10 feet
b) 3 feet
c) 6 inches
d) 1 foot

Explanation:

Question 4

To determine which outlets need GFCI protection on construction sites, we refer to electrical safety standards (e.g., NEC). 120 - volt, single - phase, 15 - and 20 - ampere outlets (used for general purposes like tools, temporary power) are required to have GFCI protection on construction sites. 240 - volt outlets (option b) don't have this specific requirement for all construction site use. Option c is incorrect as it's not just power tool outlets. Option d is incorrect as permanent wiring system outlets on construction sites (which are temporary use of permanent - like wiring) for 120V 15/20A need GFCI, not all permanent - part outlets.

According to NEC (National Electrical Code) standards, flexible cords must be marked with their NEC rating code every 3 feet. This is a standard requirement for identifying the cord's rating for safety and compliance.

Answer:

a) 120 - volt, single - phase, 15 - and 20 - ampere outlets

Question 5